git-gui: Fix switch statement in lib/merge.tcl
git-gui: Fix switch statement in lib/merge.tcl

0aea2842 (Make Ctrl-T safe to use for conflicting files) introduced a new
case, but forgot the '-' to indicate that it shares the body with the
subsequent case label.

Signed-off-by: Johannes Sixt <5cc107486946fdcf16e86d7c808fa50f4312125f@telecom.at>
Signed-off-by: Shawn O. Pearce <f01032651c12a22b2103346ba96b3b6b231f9d3c@spearce.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git