libobs: Remove trailing whitespace

libobs/obs-encoder.h

@@ -240,7 +240,7 @@ struct obs_encoder_info {
 
 	/**
 	 * Gets the default settings for this encoder
-	 * 
+	 *
 	 * If get_defaults is also defined both will be called, and the first
 	 * call will be to get_defaults, then to get_defaults2.
 	 *