Fix warning

vigilance/functions/vigilance-extend.php

@@ -353,12 +353,12 @@
 				return stripslashes(wp_filter_post_kses(get_option($this->shortname.'_feed_intro' )));
 			}
 			function feedEmail() {
-				return htmlspecialchars(wp_filter_post_kses(get_option($this->shortname.'_feed_email')), UTF-8);
+				return htmlspecialchars(wp_filter_post_kses(get_option($this->shortname.'_feed_email')), 'UTF-8');
 			}
 
 			/* TWITTER FUNCTIONS */
 			function twitter() {
-				return htmlspecialchars(wp_filter_post_kses(get_option($this->shortname.'_twitter')), UTF-8);
+				return htmlspecialchars(wp_filter_post_kses(get_option($this->shortname.'_twitter')), 'UTF-8');
 			}
 			function twitterToggle() {
 				return get_option($this->shortname.'_twitter_toggle' );
@@ -469,4 +469,4 @@
 		$vigilance = new Vigilance();
 	}
 
-?>
\ No newline at end of file
+?>