chore: fix some compiler warnings

src/audio/backend/openal2.cpp

@@ -63,12 +63,8 @@ extern "C" {
  * the context MUST exit with alProxyContext as active context and MUST not be
  * interrupted. For this to work, all functions of the base class modifying the
  * context have to be overriden.
- *
- * @var BUFFER_COUNT
- * @brief Number of buffers to use per audio source
  */
 
-static const unsigned int BUFFER_COUNT = 16;
 static const unsigned int PROXY_BUFFER_COUNT = 4;
 
 #define GET_PROC_ADDR(dev, name) name = reinterpret_cast<LP##name>(alcGetProcAddress(dev, #name))

src/video/corevideosource.h

@@ -50,7 +50,7 @@ private:
     std::atomic_bool stopped;
 
     friend class CoreAV;
-    friend struct ToxFriendCall;
+    friend class ToxFriendCall;
 };
 
 #endif // COREVIDEOSOURCE_H

src/video/videomode.cpp

@@ -59,7 +59,7 @@ QRect VideoMode::toRect() const
 bool VideoMode::operator==(const VideoMode& other) const
 {
     return width == other.width && height == other.height && x == other.x && y == other.y
-           && FPS == other.FPS && pixel_format == other.pixel_format;
+           && qFuzzyCompare(FPS, other.FPS) && pixel_format == other.pixel_format;
 }
 
 uint32_t VideoMode::norm(const VideoMode& other) const
@@ -72,5 +72,5 @@ uint32_t VideoMode::norm(const VideoMode& other) const
  */
 VideoMode::operator bool() const
 {
-    return width || height || (FPS < 0);
+    return width || height || static_cast<int>(FPS);
 }