fix color channels on macOS

Incorrect condition was leading to bad pixel format conversion before
sending frames to client on macOS (BGR instead of correct RGB).

Change-Id: Ie76a488c4151d00249ed1adb5b0b02e43d2972eb
Reviewed-by: Andreas Traczyk <andreas.traczyk@savoirfairelinux.com>

src/media/video/sinkclient.cpp

@@ -343,11 +343,12 @@ SinkClient::update(Observable<std::shared_ptr<VideoFrame>>* /*obs*/,
         VideoScaler scaler;
         const int width = f.width();
         const int height = f.height();
-#if (defined(__ANDROID__) || (defined(__APPLE__)) && !defined(TARGET_OS_IPHONE))
+#if defined(__ANDROID__) || (defined(__APPLE__) && !TARGET_OS_IPHONE)
         const int format = VIDEO_PIXFMT_RGBA;
 #else
         const int format = VIDEO_PIXFMT_BGRA;
 #endif
+
         const auto bytes = videoFrameSize(format, width, height);
 
         if (bytes > 0) {