Whoops, someone forgot an else! (#1385)

Luckily it seems this didn't cause huge memory bloat because there's
a check below that keeps the display flag from being set in low memory
conditions when the node is off the screen.

Source/Details/ASRangeController.mm

@@ -280,7 +280,7 @@ - (void)_updateVisibleNodeIndexPaths
   } else {
     if (emptyDisplayRange == YES) {
       displayElements = [NSHashTable hashTableWithOptions:NSHashTableObjectPointerPersonality];
-    } if (equalDisplayVisible == YES) {
+    } else if (equalDisplayVisible == YES) {
       displayElements = visibleElements;
     } else {
       // Calculating only the Display range means the Preload range is either the same as Display or Visible.