git-gui: Fix Blame Parent & Context for working copy lines.

diff --git a/git-gui.sh b/git-gui.sh
index 10d8a4422f151eda78a24ff533eb20c3d775d099..9fbee24c2edf46e616cbc950c7233bfb2286654b 100755 (executable)
--- a/git-gui.sh
+++ b/git-gui.sh
@@ -1025,6 +1025,9 @@ set current_diff_path {}
 set is_3way_diff 0
 set selected_commit_type new
 
+set nullid "0000000000000000000000000000000000000000"
+set nullid2 "0000000000000000000000000000000000000001"
+
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 ## task management