strmbase: Use !list_empty() instead of list_count() > 0.

dlls/strmbase/outputqueue.c

@@ -171,10 +171,10 @@ HRESULT WINAPI OutputQueue_ReceiveMultiple(OutputQueue *pOutputQueue, IMediaSamp
             list_add_tail(pOutputQueue->SampleList, &qev->entry);
             (*nSamplesProcessed)++;
         }
-        LeaveCriticalSection(&pOutputQueue->csQueue);
 
         if (!pOutputQueue->bBatchExact || list_count(pOutputQueue->SampleList) >= pOutputQueue->lBatchSize)
             SetEvent(pOutputQueue->hProcessQueue);
+        LeaveCriticalSection(&pOutputQueue->csQueue);
     }
     return hr;
 }
@@ -190,7 +190,7 @@ VOID WINAPI OutputQueue_SendAnyway(OutputQueue *pOutputQueue)
     if (pOutputQueue->hThread)
     {
         EnterCriticalSection(&pOutputQueue->csQueue);
-        if (list_count(pOutputQueue->SampleList) > 0)
+        if (!list_empty(pOutputQueue->SampleList))
         {
             pOutputQueue->bSendAnyway = TRUE;
             SetEvent(pOutputQueue->hProcessQueue);
@@ -235,14 +235,14 @@ DWORD WINAPI OutputQueueImpl_ThreadProc(OutputQueue *pOutputQueue)
     do
     {
         EnterCriticalSection(&pOutputQueue->csQueue);
-        if (list_count(pOutputQueue->SampleList) > 0 &&
+        if (!list_empty(pOutputQueue->SampleList) &&
             (!pOutputQueue->bBatchExact ||
             list_count(pOutputQueue->SampleList) >= pOutputQueue->lBatchSize ||
             pOutputQueue->bSendAnyway
             )
            )
         {
-            while (list_count(pOutputQueue->SampleList) > 0)
+            while (!list_empty(pOutputQueue->SampleList))
             {
                 IMediaSample **ppSamples;
                 LONG nSamples;
@@ -278,8 +278,6 @@ DWORD WINAPI OutputQueueImpl_ThreadProc(OutputQueue *pOutputQueue)
                 HeapFree(GetProcessHeap(),0,ppSamples);
 
                 /* Process Non-Samples */
-                if (list_count(pOutputQueue->SampleList) > 0)
-                {
                 LIST_FOR_EACH_SAFE(cursor, cursor2, pOutputQueue->SampleList)
                 {
                     QueuedEvent *qev = LIST_ENTRY(cursor, QueuedEvent, entry);
@@ -301,7 +299,6 @@ DWORD WINAPI OutputQueueImpl_ThreadProc(OutputQueue *pOutputQueue)
                     HeapFree(GetProcessHeap(),0,qev);
                 }
             }
-            }
             pOutputQueue->bSendAnyway = FALSE;
         }
         LeaveCriticalSection(&pOutputQueue->csQueue);