Fixed warning message on openSuse due to apache2 module check

install/lib/install.lib.php

@@ -865,7 +865,7 @@ function getapachemodules() {
 		return array();
 	}
 	
-	exec($cmd, $output, $return_var);
+	exec($cmd . ' 2>/dev/null', $output, $return_var);
 	if($return_var != 0 || !$output[0]) {
 		$app->log("Could not check apache modules, apachectl did not return any data.", LOGLEVEL_WARN);
 		return array();

server/lib/classes/system.inc.php

@@ -1770,7 +1770,7 @@ class system{
 			return array();
 		}
 		
-		exec($cmd, $output, $return_var);
+		exec($cmd . ' 2>/dev/null', $output, $return_var);
 		if($return_var != 0 || !$output[0]) {
 			$app->log("Could not check apache modules, apachectl did not return any data.", LOGLEVEL_WARN);
 			return array();