Fix a potential null pointer

Apparently sometimes the tab that is being selected or deselected doesn’t exist.
KSP-CKAN · May 18, 2015 · 33d8774 · 33d8774
1 parent b192b60
commit 33d8774
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/TabController.cs b/TabController.cs
@@ -140,7 +140,7 @@ private void OnDeselect(object sender, TabControlCancelEventArgs args)
             }
             else if (Platform.IsMac)
             { 
-                if (args.Action == TabControlAction.Deselecting)
+                if (args.Action == TabControlAction.Deselecting && args.TabPage != null)
                 {
                     // Have to set visibility to false on children controls on hidden tabs because they don't 
                     // always heed parent visibility on Mac OS X https://bugzilla.xamarin.com/show_bug.cgi?id=3124
@@ -149,7 +149,7 @@ private void OnDeselect(object sender, TabControlCancelEventArgs args)
                         control.Visible = false;
                     }
                 }
-                else if (args.Action == TabControlAction.Selecting)
+                else if (args.Action == TabControlAction.Selecting && args.TabPage != null)
                 {
                     // Set children controls' visibility back to true
                     foreach (Control control in args.TabPage.Controls)