Debugger: Remove unused local variables

Change-Id: I1580888f4955b4dc489ce91e705fc9de9f8b75db
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Remove strange break

Change-Id: I1106e6f15ddc89057d23eedff9a0000893f2147e
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Validate pointer *before* using it

Change-Id: I8bf80fcdd51b5db8e7c65adba551ca667912cd86
Reviewed-by: hjk <hjk121@nokiamail.com>