[PATCH 2/5] winegstreamer: Return early if no byte stream was provided.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/winegstreamer/media_source.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/dlls/winegstreamer/media_source.c b/dlls/winegstreamer/media_source.c
index 985aab8e434..a5423411096 100644
--- a/dlls/winegstreamer/media_source.c
+++ b/dlls/winegstreamer/media_source.c
@@ -1823,8 +1823,7 @@ static ULONG WINAPI create_object_context_Release(IUnknown *iface)

if (!refcount)
     {
-        if (context->stream)
-            IMFByteStream_Release(context->stream);
+        IMFByteStream_Release(context->stream);
         free(context->url);
         free(context);
     }
@@ -1852,6 +1851,8 @@ static HRESULT WINAPI stream_handler_BeginCreateObject(IMFByteStreamHandler *ifa
     if (cancel_cookie)
         *cancel_cookie = NULL;

+    if (!stream)
+        return E_INVALIDARG;
     if (FAILED(hr = MFCreateAsyncResult(NULL, callback, state, &caller)))
         return hr;

@@ -1865,16 +1866,9 @@ static HRESULT WINAPI stream_handler_BeginCreateObject(IMFByteStreamHandler *ifa
     context->refcount = 1;
     context->flags = flags;
     context->stream = stream;
-    if (context->stream)
-        IMFByteStream_AddRef(context->stream);
+    IMFByteStream_AddRef(context->stream);
     if (url)
         context->url = wcsdup(url);
-    if (!context->stream)
-    {
-        IMFAsyncResult_Release(caller);
-        IUnknown_Release(&context->IUnknown_iface);
-        return E_OUTOFMEMORY;
-    }

hr = MFCreateAsyncResult(&context->IUnknown_iface, &handler->IMFAsyncCallback_iface, (IUnknown *)caller, &item);
     IUnknown_Release(&context->IUnknown_iface);