coverity#738633 Uninitialized pointer field

Change-Id: I46084f663d8089d8bcf865774ced72a9b655e811

filter/source/graphicfilter/etiff/etiff.cxx

@@ -117,15 +117,33 @@ public:
 
 TIFFWriter::TIFFWriter(SvStream &rStream)
     : m_rOStm(rStream)
+    , mnStreamOfs(0)
     , mbStatus(true)
     , mpAcc(NULL)
+    , mnWidth(0)
+    , mnHeight(0)
+    , mnColors(0)
     , mnCurAllPictHeight(0)
     , mnSumOfAllPictHeight(0)
+    , mnBitsPerPixel(0)
     , mnLastPercent(0)
+    , mnLatestIfdPos(0)
+    , mnTagCount(0)
+    , mnCurrentTagCountPos(0)
     , mnXResPos(0)
     , mnYResPos(0)
+    , mnPalPos(0)
     , mnBitmapPos(0)
     , mnStripByteCountPos(0)
+    , pTable(NULL)
+    , pPrefix(NULL)
+    , nDataSize(0)
+    , nClearCode(0)
+    , nEOICode(0)
+    , nTableSize(0)
+    , nCodeSize(0)
+    , nOffset(0)
+    , dwShift(0)
 {
 }