fix

iOSClient/Main/CCMain.m

@@ -1656,7 +1656,7 @@
         }
     }
     
-    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.3 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
+    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 0.2 * NSEC_PER_SEC), dispatch_get_main_queue(), ^(void) {
         if ([selectorPost isEqualToString:selectorReadFolderForced] ) {
             
             [self readFolder:serverUrl];