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windowscodecs: Fix crash when PNG decoder is freed without successful init.

This commit is contained in:
Vincent Povirk 2015-04-10 11:39:34 -05:00 committed by Alexandre Julliard
parent 2da8f9a9db
commit 27ae589d2a
1 changed files with 3 additions and 1 deletions
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2
dlls/windowscodecs/pngformat.c
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@ -442,6 +442,7 @@ static ULONG WINAPI PngDecoder_Release(IWICBitmapDecoder *iface)
if (ref == 0)
{
if (This->stream)
IStream_Release(This->stream);
if (This->png_ptr)
ppng_destroy_read_struct(&This->png_ptr, &This->info_ptr, &This->end_info);
@ -1218,6 +1219,7 @@ HRESULT PngDecoder_CreateInstance(REFIID iid, void** ppv)
This->png_ptr = NULL;
This->info_ptr = NULL;
This->end_info = NULL;
This->stream = NULL;
This->initialized = FALSE;
This->image_bits = NULL;
InitializeCriticalSection(&This->lock);