quartz: Remove redundant NULL checks before CoTaskMemFree().

dlls/quartz/avidec.c

@@ -349,11 +349,8 @@ static HRESULT WINAPI AVIDec_BreakConnect(TransformFilter *tf, PIN_DIRECTION dir
     {
         if (This->hvid)
             ICClose(This->hvid);
-        if (This->pBihIn)
-            CoTaskMemFree(This->pBihIn);
-        if (This->pBihOut)
-            CoTaskMemFree(This->pBihOut);
-
+        CoTaskMemFree(This->pBihIn);
+        CoTaskMemFree(This->pBihOut);
         This->hvid = NULL;
         This->pBihIn = NULL;
         This->pBihOut = NULL;

dlls/quartz/filtermapper.c

@@ -609,8 +609,7 @@ static void FM2_DeleteRegFilter(REGFILTER2 * prf2)
     for (i = 0; i < prf2->u.s2.cPins2; i++)
     {
         UINT j;
-        if (prf2->u.s2.rgPins2[i].clsPinCategory)
-            CoTaskMemFree((LPVOID)prf2->u.s2.rgPins2[i].clsPinCategory);
+        CoTaskMemFree((void*)prf2->u.s2.rgPins2[i].clsPinCategory);
 
         for (j = 0; j < prf2->u.s2.rgPins2[i].nMediaTypes; j++)
         {

dlls/quartz/mpegsplit.c

@@ -589,8 +589,7 @@ static HRESULT MPEGSplitter_pre_connect(IPin *iface, IPin *pConnectPin, ALLOCATO
 
             if (FAILED(hr))
             {
-                if (amt.pbFormat)
-                    CoTaskMemFree(amt.pbFormat);
+                CoTaskMemFree(amt.pbFormat);
                 ERR("Could not create pin for MPEG audio stream (%x)\n", hr);
                 break;
             }

dlls/quartz/tests/filtermapper.c

@@ -528,8 +528,7 @@ static void test_parse_filter_data(void)
     ok(pRegFilter->dwMerit == 0x5fffff,"Incorrect merit returned\n");
 
 out:
-    if (pRegFilter)
-        CoTaskMemFree(pRegFilter);
+    CoTaskMemFree(pRegFilter);
     if (psa)
     {
         SafeArrayUnaccessData(psa);