ole32: Fix testing of HRESULT types with not operator instead of comparing against S_OK.

dlls/ole32/compobj.c

@@ -1391,7 +1391,7 @@ HRESULT WINAPI StringFromCLSID(REFCLSID id, LPOLESTR *idstr)
 		return ret;
 
 	ret=WINE_StringFromCLSID(id,buf);
-	if (!ret) {
+	if (ret == S_OK) {
             DWORD len = MultiByteToWideChar( CP_ACP, 0, buf, -1, NULL, 0 );
             *idstr = IMalloc_Alloc( mllc, len * sizeof(WCHAR) );
             MultiByteToWideChar( CP_ACP, 0, buf, -1, *idstr, len );
@@ -2806,7 +2806,7 @@ HRESULT WINAPI CoTreatAsClass(REFCLSID clsidOld, REFCLSID clsidNew)
     if (!memcmp( clsidOld, clsidNew, sizeof(*clsidOld) ))
     {
        if (!RegQueryValueW(hkey, wszAutoTreatAs, auto_treat_as, &auto_treat_as_size) &&
-           !CLSIDFromString(auto_treat_as, &id))
+           CLSIDFromString(auto_treat_as, &id) == S_OK)
        {
            if (RegSetValueW(hkey, wszTreatAs, REG_SZ, auto_treat_as, sizeof(auto_treat_as)))
            {

dlls/ole32/oleproxy.c

@@ -585,7 +585,7 @@ static HRESULT WINAPI RemUnkStub_Invoke(LPRPCSTUBBUFFER iface,
     pMsg->cbBuffer = cIids * sizeof(HRESULT);
 
     IRpcChannelBuffer_GetBuffer(pChannel, pMsg, &IID_IRemUnknown);
-    if (!hr)
+    if (hr == S_OK)
     {
         buf = pMsg->Buffer;
         memcpy(buf, pResults, cIids * sizeof(HRESULT));
@@ -964,12 +964,12 @@ PSFacBuf_CreateStub(
     if (IsEqualIID(&IID_IClassFactory, riid) ||
         IsEqualIID(&IID_IUnknown, riid) /* FIXME: fixup stub manager and remove this*/) {
 	hres = CFStub_Construct(ppStub);
-	if (!hres)
+	if (hres == S_OK)
 	    IRpcStubBuffer_Connect((*ppStub),pUnkServer);
 	return hres;
     } else if (IsEqualIID(&IID_IRemUnknown,riid)) {
 	hres = RemUnkStub_Construct(ppStub);
-	if (!hres)
+	if (hres == S_OK)
 	    IRpcStubBuffer_Connect((*ppStub),pUnkServer);
 	return hres;
     }

dlls/ole32/storage32.c

@@ -2100,7 +2100,6 @@ static HRESULT findPlaceholder(
   INT         typeOfRelation)
 {
   StgProperty storeProperty;
-  HRESULT     hr = S_OK;
   BOOL      res = TRUE;
 
   /*
@@ -2162,12 +2161,12 @@ static HRESULT findPlaceholder(
     }
   }
 
-  hr = StorageImpl_WriteProperty(
+  res = StorageImpl_WriteProperty(
          storage->base.ancestorStorage,
          storePropertyIndex,
          &storeProperty);
 
-  if(! hr)
+  if(!res)
   {
     return E_FAIL;
   }