Fix audio stutter on HTML5

Patches an issue causing audio to play twice if force_html_audio is enabled. This appears to be an oversight with Howl.

src/lime/_internal/backend/html5/HTML5AudioSource.hx

@@ -54,8 +54,14 @@ class HTML5AudioSource
 
 		parent.buffer.__srcHowl.on("end", howl_onEnd, id);
 
+		// Calling setCurrentTime causes html5 audio to replay from this position on next frame
+		#if force_html5_audio
+		if(time == 0) setCurrentTime(time);
+		#else
 		setCurrentTime(time);
 		#end
+
+		#end
 	}
 
 	public function pause():Void