loplugin:cstylecast: deal with remaining pointer casts

Change-Id: I8e3adffc4eca232889bbffd8efca48bad78a8b91

canvas/source/cairo/cairo_canvasbitmap.cxx

@@ -113,7 +113,7 @@ namespace cairocanvas
         {
             case 0:
             {
-                aRV = uno::Any( reinterpret_cast<sal_Int64>( (BitmapEx *) NULL ) );
+                aRV = uno::Any( reinterpret_cast<sal_Int64>( nullptr ) );
                 if ( !mbHasAlpha )
                     break;
 

canvas/source/vcl/canvasbitmaphelper.cxx

@@ -139,7 +139,7 @@ namespace vclcanvas
 
         Bitmap::ScopedReadAccess pReadAccess( aBitmap );
         Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
-                                                 (BitmapReadAccess*)NULL : aAlpha.AcquireReadAccess(),
+                                                 nullptr : aAlpha.AcquireReadAccess(),
                                                  aAlpha );
 
         ENSURE_OR_THROW( pReadAccess.get() != NULL,
@@ -218,7 +218,7 @@ namespace vclcanvas
         {
             Bitmap::ScopedWriteAccess pWriteAccess( aBitmap );
             Bitmap::ScopedWriteAccess pAlphaWriteAccess( aAlpha.IsEmpty() ?
-                                                       (BitmapWriteAccess*)NULL : aAlpha.AcquireWriteAccess(),
+                                                       nullptr : aAlpha.AcquireWriteAccess(),
                                                        aAlpha );
 
             if( pAlphaWriteAccess.get() )
@@ -459,7 +459,7 @@ namespace vclcanvas
         {
             Bitmap::ScopedWriteAccess pWriteAccess( aBitmap );
             Bitmap::ScopedWriteAccess pAlphaWriteAccess( aAlpha.IsEmpty() ?
-                                                       (BitmapWriteAccess*)NULL : aAlpha.AcquireWriteAccess(),
+                                                       nullptr : aAlpha.AcquireWriteAccess(),
                                                        aAlpha );
 
             ENSURE_OR_THROW( pWriteAccess.get() != NULL,
@@ -512,7 +512,7 @@ namespace vclcanvas
 
         Bitmap::ScopedReadAccess pReadAccess( aBitmap );
         Bitmap::ScopedReadAccess pAlphaReadAccess( aAlpha.IsEmpty() ?
-                                                 (BitmapReadAccess*)NULL : aAlpha.AcquireReadAccess(),
+                                                 nullptr : aAlpha.AcquireReadAccess(),
                                                  aAlpha );
         ENSURE_OR_THROW( pReadAccess.get() != NULL,
                          "Could not acquire read access to bitmap" );

canvas/source/vcl/canvashelper_texturefill.cxx

@@ -713,7 +713,7 @@ namespace vclcanvas
                         // TODO(E1): Return value
                         // TODO(F1): FillRule
                         gradientFill( mpOutDev->getOutDev(),
-                                      mp2ndOutDev.get() ? &mp2ndOutDev->getOutDev() : (OutputDevice*)NULL,
+                                      mp2ndOutDev.get() ? &mp2ndOutDev->getOutDev() : nullptr,
                                       rValues,
                                       aColors,
                                       aPolyPoly,

canvas/source/vcl/impltools.cxx

@@ -258,7 +258,7 @@ namespace vclcanvas
             Bitmap::ScopedReadAccess pReadAccess( aSrcBitmap );
             Bitmap::ScopedReadAccess pAlphaReadAccess( rBitmap.IsTransparent() ?
                                                      aSrcAlpha.AcquireReadAccess() :
-                                                     (BitmapReadAccess*)NULL,
+                                                     nullptr,
                                                      aSrcAlpha );
 
             if( pReadAccess.get() == NULL ||