Replace some IUnknown_QueryInterface() calls with the specific call

dlls/avifil32/acmstream.c

@@ -119,7 +119,7 @@ HRESULT AVIFILE_CreateACMStream(REFIID riid, LPVOID *ppv)
 
   pstream->lpVtbl = &iacmst;
 
-  hr = IUnknown_QueryInterface((IUnknown*)pstream, riid, ppv);
+  hr = IAVIStream_QueryInterface((IAVIStream*)pstream, riid, ppv);
   if (FAILED(hr))
     LocalFree((HLOCAL)pstream);
 

dlls/avifil32/avifile.c

@@ -249,7 +249,7 @@ HRESULT AVIFILE_CreateAVIFile(REFIID riid, LPVOID *ppv)
   pfile->iPersistFile.lpVtbl = &ipersistft;
   pfile->iPersistFile.paf = pfile;
 
-  hr = IUnknown_QueryInterface((IUnknown*)pfile, riid, ppv);
+  hr = IAVIFile_QueryInterface((IAVIFile*)pfile, riid, ppv);
   if (FAILED(hr))
     LocalFree((HLOCAL)pfile);
 

dlls/avifil32/factory.c

@@ -81,7 +81,7 @@ static HRESULT AVIFILE_CreateClassFactory(const CLSID *pclsid, const IID *riid,
   pClassFactory->dwRef     = 0;
   memcpy(&pClassFactory->clsid, pclsid, sizeof(pClassFactory->clsid));
 
-  hr = IUnknown_QueryInterface((IUnknown*)pClassFactory, riid, ppv);
+  hr = IClassFactory_QueryInterface((IClassFactory*)pClassFactory, riid, ppv);
   if (FAILED(hr)) {
     LocalFree((HLOCAL)pClassFactory);
     *ppv = NULL;

dlls/avifil32/icmstream.c

@@ -135,7 +135,7 @@ HRESULT AVIFILE_CreateICMStream(REFIID riid, LPVOID *ppv)
   pstream->lpVtbl  = &iicmst;
   AVIFILE_Reset(pstream);
 
-  hr = IUnknown_QueryInterface((IUnknown*)pstream, riid, ppv);
+  hr = IAVIStream_QueryInterface((IAVIStream*)pstream, riid, ppv);
   if (FAILED(hr))
     LocalFree((HLOCAL)pstream);
 

dlls/avifil32/wavfile.c

@@ -236,7 +236,7 @@ HRESULT AVIFILE_CreateWAVFile(REFIID riid, LPVOID *ppv)
   pfile->iPersistFile.paf = pfile;
   pfile->iAVIStream.paf   = pfile;
 
-  hr = IUnknown_QueryInterface((IUnknown*)pfile, riid, ppv);
+  hr = IAVIFile_QueryInterface((IAVIFile*)pfile, riid, ppv);
   if (FAILED(hr))
     LocalFree((HLOCAL)pfile);