warning C4334: '<<': result of 32-bit shift implicitly converted to 64 bits

in VisualStudio

reported by Luke Benes

Change-Id: I908039750a3e89e4d1b77631f7d309191735c765

oox/source/ole/vbainputstream.cxx

@@ -157,7 +157,7 @@ bool VbaInputStream::updateChunk()
                     sal_uInt16 nCopyToken = mpInStrm->readuInt16();
                     nChunkPos = nChunkPos + 2;
                     // update bit count used for offset/length in the token
-                    while( static_cast< size_t >( 1 << nBitCount ) < maChunk.size() ) ++nBitCount;
+                    while( ((static_cast<size_t>(1)) << nBitCount ) < maChunk.size() ) ++nBitCount;
                     // extract length from lower (16-nBitCount) bits, plus 3
                     sal_uInt16 nLength = extractValue< sal_uInt16 >( nCopyToken, 0, 16 - nBitCount ) + 3;
                     // extract offset from high nBitCount bits, plus 1

vcl/source/filter/igif/gifread.cxx

@@ -248,7 +248,7 @@ bool GIFReader::ReadGlobalHeader()
                 bGlobalPalette = ( nRF & 0x80 );
 
                 if( bGlobalPalette )
-                    ReadPaletteEntries( &aGPalette, 1 << ( ( nRF & 7 ) + 1 ) );
+                    ReadPaletteEntries( &aGPalette, 1UL << ( ( nRF & 7 ) + 1 ) );
                 else
                     nBackgroundColor = 0;
 
@@ -459,7 +459,7 @@ bool GIFReader::ReadLocalHeader()
         if( nFlags & 0x80 )
         {
             pPal = &aLPalette;
-            ReadPaletteEntries( pPal, 1 << ( (nFlags & 7 ) + 1 ) );
+            ReadPaletteEntries( pPal, 1UL << ( (nFlags & 7 ) + 1 ) );
         }
         else
             pPal = &aGPalette;