Fix bug

Pod/Classes/PNCollectionViewCell.m

@@ -71,6 +71,7 @@
     if (photoImage) {
         [_photoImageView setImage:photoImage];
         [_loadingSpinner stopAnimating];
+        [_loadingSpinner setAlpha:0];
     }
 }
 

Pod/Classes/PNImagePickerViewController.m

@@ -488,6 +488,7 @@
                 }
             }];
         }
+        _isVisible = NO;
     }
 }