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-rw-r--r--vcl/source/gdi/pngread.cxx2
1 files changed, 2 insertions, 0 deletions
diff --git a/vcl/source/gdi/pngread.cxx b/vcl/source/gdi/pngread.cxx
index 78195d5e7c46..b5ac9e430596 100644
--- a/vcl/source/gdi/pngread.cxx
+++ b/vcl/source/gdi/pngread.cxx
@@ -273,6 +273,8 @@ bool PNGReaderImpl::ReadNextChunk()
PNGReader::ChunkData& rChunkData = *maChunkIter;
// read the chunk header
+ mnChunkLen = 0;
+ mnChunkType = 0;
mrPNGStream.ReadInt32( mnChunkLen ).ReadUInt32( mnChunkType );
rChunkData.nType = mnChunkType;