fix: search task screen state handling

Signed-off-by: alperozturk <alper_ozturk@proton.me>

Author: alperozturk96

app/src/main/java/com/owncloud/android/ui/fragment/OCFileListFragment.java

@@ -1792,26 +1792,30 @@ protected void prepareActionBarItems(SearchEvent event) {
     }
 
     protected void setEmptyView(SearchEvent event) {
-        if (event == null) {
-            return;
-        }
+        if (event != null) {
+            switch (event.getSearchType()) {
+                case FILE_SEARCH:
+                    setEmptyListMessage(FILE_SEARCH);
+                    break;
 
-        switch (event.getSearchType()) {
-            case FILE_SEARCH:
-                setEmptyListMessage(FILE_SEARCH);
-                break;
+                case FAVORITE_SEARCH:
+                    setEmptyListMessage(FAVORITE_SEARCH);
+                    break;
 
-            case FAVORITE_SEARCH:
-                setEmptyListMessage(FAVORITE_SEARCH);
-                break;
+                case RECENTLY_MODIFIED_SEARCH:
+                    setEmptyListMessage(RECENTLY_MODIFIED_SEARCH);
+                    break;
 
-            case RECENTLY_MODIFIED_SEARCH:
-                setEmptyListMessage(RECENTLY_MODIFIED_SEARCH);
-                break;
+                case SHARED_FILTER:
+                    setEmptyListMessage(SHARED_FILTER);
+                    break;
 
-            case SHARED_FILTER:
-                setEmptyListMessage(SHARED_FILTER);
-                break;
+                default:
+                    setEmptyListMessage(NO_SEARCH);
+                    break;
+            }
+        } else {
+            setEmptyListMessage(NO_SEARCH);
         }
     }