Fix some trivial warnings

Building still has a lot of warnings, and some of these errors happened
to show up quite a bit. Fixing these warnings should help reduce that,
although there are still plenty to fix.

Signed-off-by: Avery King <gperson@disroot.org>

libraries/lib-audio-io/PlaybackSchedule.h

@@ -263,7 +263,7 @@ struct AUDIO_IO_API PlaybackSchedule {
          ///@brief Flag is set when used by at least consumer thread.
          ///Once node is not used by neither it's flag is cleared making it available
          ///for recycling.
-         std::atomic_flag active { ATOMIC_FLAG_INIT };
+         std::atomic_flag active = ATOMIC_FLAG_INIT;
 
          ///@brief Number of samples advanced from the beginning of the current head. Accessed only by consumer thread.
          size_t offset { 0 };

libraries/lib-time-and-pitch/StaffPadTimeAndPitch.cpp

@@ -37,8 +37,8 @@ int GetFftSize(int sampleRate, bool formantPreservationOn)
    // If needed some time in the future, we can decouple analysis window and
    // FFT sizes by zero-padding, allowing for very fine-grained window duration
    // without compromising performance.
-   return 1 << (formantPreservationOn ? 11 : 12) +
-                  (int)std::round(std::log2(sampleRate / 44100.));
+   return 1 << ((formantPreservationOn ? 11 : 12) +
+                  (int)std::round(std::log2(sampleRate / 44100.)));
 }
 
 std::unique_ptr<staffpad::TimeAndPitch> CreateTimeAndPitch(

libraries/lib-wave-track/WaveClip.h

@@ -343,7 +343,7 @@ public:
    void SetRate(int rate);
    void SetRawAudioTempo(double tempo);
 
-   PitchAndSpeedPreset GetPitchAndSpeedPreset() const;
+   PitchAndSpeedPreset GetPitchAndSpeedPreset() const override;
 
    //! Stretches from left to the absolute time (if in expected range)
    void StretchLeftTo(double to);