API: use regex instead of SimpleXMLElement

It's easier with exotic chars.
And the editor replaced all leading spaces with tabs.

include/api.php

@@ -2294,11 +2294,20 @@
 	 * 			'url => 'url'
 	 */
 	function api_contactlink_to_array($txt) {
-		$elm = new SimpleXMLElement($txt);
-		return array(
-			'name' => $elm->__toString(),
-			'url' => $elm->attributes()['href']->__toString()
+		$match = array();
+		$r = preg_match_all('|<a href="([^"]*)">([^<]*)</a>|', $txt, $match);
+		if ($r && count($match)==3) {
+			$res = array(
+				'name' => $match[2],
+				'url' => $match[1]
 			);
+		} else {
+			$res = array(
+				'name' => $text,
+				'url' => ""
+			);
+		}
+		return $res;
 	}