dplayx: Use SUCCEEDED instead of !FAILED.

dlls/dplayx/dplay.c

@@ -2323,7 +2323,7 @@ static HRESULT WINAPI DP_IF_EnumSessions
       hr = NS_SendSessionRequestBroadcast( &lpsd->guidApplication,
                                            dwFlags, &This->dp2->spData );
 
-      if( !FAILED(hr) )
+      if( SUCCEEDED(hr) )
       {
         EnumSessionAsyncCallbackData* lpData
           = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof( *lpData ) );

dlls/dplayx/dplayx_messages.c

@@ -233,7 +233,7 @@ HRESULT DP_MSG_SendRequestPlayerId( IDirectPlay2AImpl* This, DWORD dwFlags,
   }
 
   /* Need to examine the data and extract the new player id */
-  if( !FAILED(hr) )
+  if( SUCCEEDED(hr) )
   {
     LPCDPMSG_NEWPLAYERIDREPLY lpcReply;