Fix class methods staticity/return value

src/App.php

@@ -312,10 +312,8 @@ class App {
 	 *
 	 * @return string
 	 */
-	public static function get_basepath() {
-		if (isset($this)) {
-			$basepath = $this->basepath;
-		}
+	public function get_basepath() {
+		$basepath = $this->basepath;
 
 		if (! $basepath) {
 			$basepath = Config::get('system', 'basepath');

src/Protocol/Diaspora.php

@@ -1094,7 +1094,7 @@ class Diaspora
 		preg_replace_callback(
 			$expression,
 			function ($match) use ($item) {
-				return self::fetchGuidSub($match, $item);
+				self::fetchGuidSub($match, $item);
 			},
 			$item["body"]
 		);
@@ -1102,7 +1102,7 @@ class Diaspora
 		preg_replace_callback(
 			"&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
 			function ($match) use ($item) {
-				return self::fetchGuidSub($match, $item);
+				self::fetchGuidSub($match, $item);
 			},
 			$item["body"]
 		);

src/Protocol/Feed.php

@@ -32,7 +32,7 @@ class Feed {
 	 *
 	 * @return array In simulation mode it returns the header and the first item
 	 */
-	function import($xml, $importer, &$contact, &$hub, $simulate = false) {
+	public static function import($xml, $importer, &$contact, &$hub, $simulate = false) {
 
 		$a = get_app();