push: fix segfault for odd config

diff --git a/git-gui/lib/diff.tcl b/git-gui/lib/diff.tcl
index 94ee38cccc1ee9a43f8dd1309353609b283d8af5..bbbf15c875f437f486f652d204bcebf1e5f1a8e4 100644 (file)
--- a/git-gui/lib/diff.tcl
+++ b/git-gui/lib/diff.tcl
@@ -16,7 +16,7 @@ proc clear_diff {} {
        $ui_workdir tag remove in_diff 0.0 end
 }
 
-proc reshow_diff {} {
+proc reshow_diff {{after {}}} {
        global file_states file_lists
        global current_diff_path current_diff_side
        global ui_diff
@@ -30,13 +30,13 @@ proc reshow_diff {} {
                || [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} {
 
                if {[find_next_diff $current_diff_side $p {} {[^O]}]} {
-                       next_diff
+                       next_diff $after
                } else {
                        clear_diff
                }
        } else {
                set save_pos [lindex [$ui_diff yview] 0]
-               show_diff $p $current_diff_side {} $save_pos
+               show_diff $p $current_diff_side {} $save_pos $after
        }
 }