SuccessChanges

Summary

  1. Fix NPE in HandlerServiceImpl if provided context is already disposed (details)
Commit 2c7794db39e20a0c5f442a0b76eb8db52d450636 by Ivan Furnadjiev
Fix NPE in HandlerServiceImpl if provided context is already disposed

HandlerServiceImpl#getContextStack may return null if the provided
context is already disposed. Return empty stack list in this case.

510621: [e4] NullPointerException in HandlerServiceImpl.executeHandler()
https://bugs.eclipse.org/bugs/show_bug.cgi?id=510621

Change-Id: If56c1d567a36090359d6dc2a3f4c7f7fd2074695
The file was modifiedbundles/org.eclipse.e4.core.commands/src-rap/org/eclipse/e4/core/commands/internal/HandlerServiceImpl.java