From 3f05998c6a8fd23e8d794b6fdd8b8951b2068a1b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20Villac=C3=ADs=20Lasso?= <a_villacis@palosanto.com>
Date: Mon, 12 Sep 2005 20:14:49 +0000
Subject: [PATCH] Initialize structs for mmioDescend and FindChunkAndKeepExtras
 - fixes AVI file recognition.

---
 dlls/avifil32/avifile.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dlls/avifil32/avifile.c b/dlls/avifil32/avifile.c
index 901010d59d9..ea7eccfef8a 100644
--- a/dlls/avifil32/avifile.c
+++ b/dlls/avifil32/avifile.c
@@ -1612,6 +1612,7 @@ static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
   memset(This->ppStreams, 0, sizeof(This->ppStreams));
 
   /* try to get "RIFF" chunk -- must not be at beginning of file! */
+  memset(&ckRIFF, 0, sizeof(ckRIFF));
   ckRIFF.fccType = formtypeAVI;
   if (mmioDescend(This->hmmio, &ckRIFF, NULL, MMIO_FINDRIFF) != S_OK) {
     ERR(": not an AVI!\n");
@@ -1619,12 +1620,14 @@ static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
   }
 
   /* get "LIST" "hdrl" */
+  memset(&ckLIST1, 0, sizeof(ckLIST1));
   ckLIST1.fccType = listtypeAVIHEADER;
   hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ckLIST1, &ckRIFF, MMIO_FINDLIST);
   if (FAILED(hr))
     return hr;
 
   /* get "avih" chunk */
+  memset(&ck, 0, sizeof(ck));
   ck.ckid = ckidAVIMAINHDR;
   hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckLIST1, MMIO_FINDCHUNK);
   if (FAILED(hr))
@@ -1669,6 +1672,7 @@ static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
     return AVIERR_FILEREAD;
 
   /* foreach stream exists a "LIST","strl" chunk */
+  memset(&ckLIST2, 0, sizeof(ckLIST2));
   for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
     /* get next nested chunk in this "LIST","strl" */
     if (mmioDescend(This->hmmio, &ckLIST2, &ckLIST1, 0) != S_OK)