diff options
Diffstat (limited to 'vcl/source/gdi/pngwrite.cxx')
| -rw-r--r-- | vcl/source/gdi/pngwrite.cxx | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/vcl/source/gdi/pngwrite.cxx b/vcl/source/gdi/pngwrite.cxx index d9336ce85a92..63a6565e862a 100644 --- a/vcl/source/gdi/pngwrite.cxx +++ b/vcl/source/gdi/pngwrite.cxx @@ -599,9 +599,6 @@ sal_uLong PNGWriterImpl::ImplGetFilter (sal_uLong nY, sal_uLong nXStart, sal_uLo pDest = mpDeflateInBuf; *pDest++ = 4; // filter type - sal_uLong na, nb, nc; - long np, npa, npb, npc; - sal_uInt8* p1 = mpCurrentScan + 1; // Current Pixel sal_uInt8* p2 = p1 - mnBBP; // left pixel sal_uInt8* p3 = mpPreviousScan; // upper pixel @@ -609,7 +606,8 @@ sal_uLong PNGWriterImpl::ImplGetFilter (sal_uLong nY, sal_uLong nXStart, sal_uLo while (pDest < mpDeflateInBuf + mnDeflateInSize) { - nb = *p3++; + sal_uLong nb = *p3++; + sal_uLong na, nc; if (p2 >= mpCurrentScan + 1) { na = *p2; @@ -620,11 +618,10 @@ sal_uLong PNGWriterImpl::ImplGetFilter (sal_uLong nY, sal_uLong nXStart, sal_uLo na = nc = 0; } - np = na + nb; - np -= nc; - npa = np - na; - npb = np - nb; - npc = np - nc; + long np = na + nb - nc; + long npa = np - na; + long npb = np - nb; + long npc = np - nc; if (npa < 0) npa =-npa; |