reduce scope of local variables

This addresses some cppcheck warnings.

Change-Id: I1122494e295af756ef3cc32717fe204505aeb9e3
Reviewed-on: https://gerrit.libreoffice.org/13335Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>

bridges/source/cpp_uno/gcc3_ios_arm/uno2cpp-arm.cxx

@@ -357,11 +357,9 @@ static void cpp_call(
 
     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
 
-    bool bSimpleReturn = true;
     if (pReturnTypeDescr)
     {
-        if (arm::return_in_hidden_param( pReturnTypeRef ) )
-            bSimpleReturn = false;
+        bool bSimpleReturn = !arm::return_in_hidden_param( pReturnTypeRef );
 
         if (bSimpleReturn)
             pCppReturn = pUnoReturn; // direct way for simple types

bridges/source/cpp_uno/gcc3_linux_arm/uno2cpp.cxx

@@ -406,11 +406,9 @@ static void cpp_call(
 
     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
 
-    bool bSimpleReturn = true;
     if (pReturnTypeDescr)
     {
-        if (arm::return_in_hidden_param( pReturnTypeRef ) )
-            bSimpleReturn = false;
+        bool bSimpleReturn = !arm::return_in_hidden_param( pReturnTypeRef )
 
         if (bSimpleReturn)
             pCppReturn = pUnoReturn; // direct way for simple types

bridges/source/cpp_uno/gcc3_linux_powerpc64/uno2cpp.cxx

@@ -316,15 +316,13 @@ static void cpp_call(
     void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
 
     bool bOverflow = false;
-    bool bSimpleReturn = true;
 
     if (pReturnTypeDescr)
     {
 #if OSL_DEBUG_LEVEL > 2
         fprintf(stderr, "return type is %d\n", pReturnTypeDescr->eTypeClass);
 #endif
-        if (ppc64::return_in_hidden_param(pReturnTypeRef))
-            bSimpleReturn = false;
+        bool bSimpleReturn =!ppc64::return_in_hidden_param(pReturnTypeRef);
 
         if (bSimpleReturn)
         {

bridges/source/cpp_uno/gcc3_linux_s390/uno2cpp.cxx

@@ -42,10 +42,11 @@ static sal_Int32
 invoke_count_words(char * pPT)
 {
      sal_Int32 overflow = 0, gpr = 0, fpr = 0;
-     int c;                        // character of parameter type being decoded
 
      while (*pPT != 'X') {
-       c = *pPT;
+       // character of parameter type being decoded
+       const int c = *pPT;
+
        switch (c) {
        case 'D':                   /* type is double */
             if (fpr < 2) fpr++; else overflow+=2;
@@ -84,10 +85,9 @@ invoke_copy_to_stack(sal_Int32 * pStackLongs, char * pPT, sal_Int32* d_ov, sal_I
     sal_Int32 *d_gpr = d_ov + overflow;
     sal_Int64 *d_fpr = (sal_Int64 *)(d_gpr + 5);
     sal_Int32 gpr = 0, fpr = 0;
-    char c;
 
      while (*pPT != 'X') {
-       c = *pPT;
+       const char c = *pPT;
        switch (c) {
        case 'D':                   /* type is double */
             if (fpr < 2)

canvas/source/cairo/cairo_canvashelper.cxx

@@ -670,7 +670,6 @@ namespace cairocanvas
 
     static void addColorStops( Pattern* pPattern, const uno::Sequence< uno::Sequence< double > >& rColors, const uno::Sequence< double >& rStops, bool bReverseStops = false )
     {
-        float stop;
         int i;
 
         OSL_ASSERT( rColors.getLength() == rStops.getLength() );
@@ -678,7 +677,7 @@ namespace cairocanvas
         for( i = 0; i < rColors.getLength(); i++ )
         {
             const uno::Sequence< double >& rColor( rColors[i] );
-            stop = bReverseStops ? 1 - rStops[i] : rStops[i];
+            float stop = bReverseStops ? 1 - rStops[i] : rStops[i];
             if( rColor.getLength() == 3 )
                 cairo_pattern_add_color_stop_rgb( pPattern, stop, rColor[0], rColor[1], rColor[2] );
             else if( rColor.getLength() == 4 )

canvas/source/directx/dx_canvasbitmap.cxx

@@ -214,10 +214,9 @@ namespace dxcanvas
                     boost::scoped_array<sal_uInt8> pAlphaBits( new sal_uInt8[nScanWidth*aSize.getY()] );
                     const sal_uInt8* pInBits=(sal_uInt8*)aBmpData.Scan0;
                     pInBits+=3;
-                    sal_uInt8* pOutBits;
                     for( sal_Int32 y=0; y<aSize.getY(); ++y )
                     {
-                        pOutBits=pAlphaBits.get()+y*nScanWidth;
+                        sal_uInt8* pOutBits=pAlphaBits.get()+y*nScanWidth;
                         for( sal_Int32 x=0; x<aSize.getX(); ++x )
                         {
                             *pOutBits++ = 255-*pInBits;

canvas/source/directx/dx_surfacegraphics.cxx

@@ -53,12 +53,11 @@ namespace dxcanvas
 
     GraphicsSharedPtr createSurfaceGraphics(const COMReference<surface_type>& rSurface )
     {
-        Gdiplus::Graphics* pGraphics;
         GraphicsSharedPtr  pRet;
         HDC aHDC;
         if( SUCCEEDED(rSurface->GetDC( &aHDC )) )
         {
-            pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
+            Gdiplus::Graphics* pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
             if(pGraphics)
             {
                 tools::setupGraphics( *pGraphics );

canvas/workben/canvasdemo.cxx

@@ -208,14 +208,13 @@ class DemoRenderer
             const int    VERTICES = 10;
             const double RADIUS = 60.0;
             int i, j;
-            double a;
 
             rendering::RenderState maOldRenderState = maRenderState; // push
             translate( center_x, center_y );
 
             for (i = 0; i < VERTICES; i++)
             {
-                a = 2.0 * M_PI * i / VERTICES;
+                double a = 2.0 * M_PI * i / VERTICES;
                 geometry::RealPoint2D aSrc( RADIUS * cos (a), RADIUS * sin (a) );
 
                 for (j = i + 1; j < VERTICES; j++)