minor fixes

Author: hyperblast

js/webui/src/elements.js

@@ -74,7 +74,7 @@ const repeatInterval = 500;
 
 function isLeftButtonOrTouch(e)
 {
-    return e.button === 0 || typeof e.touches != 'undefined';
+    return e.button === 0 || typeof e.touches !== 'undefined';
 }
 
 export class RepeatingButton extends React.PureComponent

js/webui/src/volume_control.js

@@ -49,12 +49,12 @@ class VolumeControl_ extends React.PureComponent
             this.props.onAfterMuteClick();
     }
 
-    handleVolumeUp(e)
+    handleVolumeUp()
     {
         this.context.playerModel.volumeStep(1);
     }
 
-    handleVolumeDown(e)
+    handleVolumeDown()
     {
         this.context.playerModel.volumeStep(-1);
     }