Use current FFmpeg profile constants and qualify video port status

tools/chatgui/src/call_video_engine.cpp

@@ -148,7 +148,7 @@ void CallVideoEngine::transmit() {
     int64_t lastPts = -1, lastKey = -1;
     bool forceKey = true;
     while (m->running) {
-        call_video_port_status state{};
+        struct call_video_port_status state{};
         if (call_video_port_status(m->id, &state) < 0) break;
         uint64_t revision; bool enabled; int width, height, codec; int64_t pts;
 #ifdef HAVE_STREAM_CAPTURE