git-gui: fix use of uninitialized variable

This fixes a bug introduced by the "display summary when showing diff of a
submodule" patch. It lead to a "no such variable" error when opening the
diff context menu while no diff was shown.

Signed-off-by: Jens Lehmann <redacted>
Signed-off-by: Shawn O. Pearce <redacted>

diff --git a/git-gui.sh b/git-gui.sh
index 88d1025dd028dfc5d0dd8ee169eebad95a5e6ddf..09b27203db742f7b9a59d2246f4843a1071f1196 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1134,6 +1134,7 @@ set current_branch {}
 set is_detached 0
 set current_diff_path {}
 set is_3way_diff 0
+set is_submodule_diff 0
 set is_conflict_diff 0
 set selected_commit_type new
 set diff_empty_count 0