Prefer requested app before redirecting to default page

lib/util.php

@@ -326,7 +326,11 @@ class OC_Util {
 		OC_Log::write('core','redirectToDefaultPage',OC_Log::DEBUG);
 		if(isset($_REQUEST['redirect_url']) && (substr($_REQUEST['redirect_url'], 0, strlen(OC::$WEBROOT)) == OC::$WEBROOT || $_REQUEST['redirect_url'][0] == '/')) {
 			header( 'Location: '.$_REQUEST['redirect_url']);
-		} else {
+		}
+		else if (isset(OC::$REQUESTEDAPP) && !empty(OC::$REQUESTEDAPP)) {
+			header( 'Location: '.OC::$WEBROOT.'/?app='.OC::$REQUESTEDAPP );
+		}
+		else {
 			header( 'Location: '.OC::$WEBROOT.'/'.OC_Appconfig::getValue('core', 'defaultpage', '?app=files'));
 		}
 		exit();