bugfix in commits API result check

linuxfoo-gitlab.php

@@ -111,7 +111,7 @@ class LinuxfooGitlab {
 
         $commits_json = file_get_contents($commits_url);
 
-        if(is_null($project_json)) {
+        if(is_null($commits_json)) {
             return self::error(__('Commits URL not reachable.', 'linuxfoo-gitlab'));
         }
 
@@ -161,9 +161,8 @@ class LinuxfooGitlab {
                 '</li>';
         }
 
-        $out .=
-                '</ul>'.
-            '</div>';
+        $out .= '</ul>';
+        $out .= '</div>';
 
         return $out;
     }