[PATCH] git-gui: Fix the blame viewer destroy handler.

[Alexander Gavrilov <angavrilov@gmail.com>]

It did not delete the object, which is not very good.
Also, destroy may be fired up for subwindows, so we
should check %W.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
---

	My own bug. I hope that now I understand
	Tcl better than 2 months ago.
	
	-- Alexander

 lib/blame.tcl |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/lib/blame.tcl b/lib/blame.tcl
index a45784c..765d08c 100644
--- a/lib/blame.tcl
+++ b/lib/blame.tcl
@@ -377,11 +377,18 @@ constructor new {i_commit i_path i_jump} {
 	"if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 
 	wm protocol $top WM_DELETE_WINDOW "destroy $top"
-	bind $top <Destroy> [cb _kill]
+	bind $top <Destroy> [cb _handle_destroy %W]
 
 	_load $this $i_jump
 }
 
+method _handle_destroy {win} {
+	if {$win eq $w} {
+		_kill $this
+		delete_this
+	}
+}
+
 method _kill {} {
 	if {$current_fd ne {}} {
 		kill_file_process $current_fd
-- 
1.6.0.20.g6148bc