Bug 14446: Workaround to resolve uninitialized value in goto warning

Bug 14446: Workaround to resolve uninitialized value in goto warning

Forcing both GetTab calls to list context resolves the warning.
A workaround, not a real fix.

Test plan:
Search for something in the syspref text bar.
Without this patch, you will have a warn: Use of uninitialized value in goto
With this patch, you won't.

Signed-off-by: Aleisha Amohia <aleishaamohia@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 1d6760f01a674ff52d96a1a342d68a7e5c9a6c8a)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>