[fix] Gitk fails to open on a bare Git repository on Windows

Running 'git rev-parse --show-toplevel' fails on a bare git repo. This causes gitk to fail to startup. Signed-off-by: Remy Bohmer <github@bohmer.net>
git-for-windows · Apr 18, 2020 · 17d664a · 17d664a
1 parent 47e3cdd
commit 17d664a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/gitk-git/gitk b/gitk-git/gitk
@@ -12599,7 +12599,9 @@ set cdup {}
 if {[expr {[exec git rev-parse --is-inside-work-tree] == "true"}]} {
     set cdup [exec git rev-parse --show-cdup]
 }
-set worktree [exec git rev-parse --show-toplevel]
+if {$hasworktree} {
+    set worktree [exec git rev-parse --show-toplevel]
+}
 setcoords
 makewindow
 catch {