Systemtap: Stop BrowserView crashes on re-open.

Prevent BrowserViews from disposing their content trees when
they are closed. This disposal caused TapsetLibrary trees to
be disposed, which are not rebuilt the the next time the views
are opened. This resulted in the NPEs that prevented the views
from being re-opened after being closed.

Resolves EBZ #435979.

Change-Id: I4428340898c5943970e105d4de8ad33e5ba8e0fa
Signed-off-by: Andrew Ferrazzutti <aferrazz@redhat.com>
Reviewed-on: https://git.eclipse.org/r/27534
Tested-by: Hudson CI
Reviewed-by: Jeff Johnston <jjohnstn@redhat.com>
Tested-by: Jeff Johnston <jjohnstn@redhat.com>
Reviewed-on: https://git.eclipse.org/r/28151

1 files changed, 0 insertions, 4 deletions

diff --git a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/views/BrowserView.java b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/views/BrowserView.java
index 3890fc7248..acedd5bfe2 100644
--- a/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/views/BrowserView.java
+++ b/systemtap/org.eclipse.linuxtools.systemtap.ui.ide/src/org/eclipse/linuxtools/internal/systemtap/ui/ide/views/BrowserView.java
@@ -154,10 +154,6 @@ public abstract class BrowserView extends ViewPart {
             collapseHandler.dispose();
             collapseHandler = null;
         }
-        if (tree != null) {
-            tree.dispose();
-            tree = null;
-        }
         if (viewer != null) {
             if (doubleClickAction != null) {
                 viewer.removeDoubleClickListener(doubleClickAction);