flavor images: fix progress bar never hiding

org.fox.ttrss/src/main/AndroidManifest.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.fox.ttrss"
-    android:versionCode="323"
+    android:versionCode="324"
     android:versionName="1.98" >
 
     <uses-sdk

org.fox.ttrss/src/main/java/org/fox/ttrss/HeadlinesFragment.java

@@ -998,9 +998,11 @@ public class HeadlinesFragment extends Fragment implements OnItemClickListener,
                                 }
 
                             });
+                        } else{
+                            article.noValidFlavorImage = true;
+                            holder.flavorImageHolder.setVisibility(View.GONE);
                         }
 
-
                     } else {
                         article.noValidFlavorImage = true;
                         holder.flavorImageHolder.setVisibility(View.GONE);