SoundPlayer: Uninitialized variable in SoundPlayerWidget, found by Coverity

Author: https://github.com/bgianfo
Commit: 3ee0917dcb
Pull-request: https://github.com/SerenityOS/serenity/pull/3184
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/bugaevc

Applications/SoundPlayer/SoundPlayerWidget.h

@@ -79,7 +79,7 @@ private:
     GUI::Window& m_window;
     NonnullRefPtr<Audio::ClientConnection> m_connection;
     PlaybackManager m_manager;
-    float m_sample_ratio;
+    float m_sample_ratio { 1.0 };
     RefPtr<GUI::Label> m_status;
     RefPtr<GUI::Label> m_elapsed;
     RefPtr<GUI::Label> m_remaining;