[PATCH] fix git-gui crash due to uninitialized variable

[Clemens Buchacher <drizzd@aon.at>]

Recently, a clone initiated via git gui on Windows crashed on me due to
an "unknown variable cdone". It turns out that there is a code path
where this variable is used uninitialized.

Signed-off-by: Clemens Buchacher <drizzd@aon.at>
---

Looking at the output of display(), it's not clear to me now the
function below could ever be called with total=0. But I can't delve into
it more deeply right now, and this seems like an obvious fix.

 git-gui/lib/status_bar.tcl |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/git-gui/lib/status_bar.tcl b/git-gui/lib/status_bar.tcl
index 95cb449..02111a1 100644
--- a/git-gui/lib/status_bar.tcl
+++ b/git-gui/lib/status_bar.tcl
@@ -77,6 +77,7 @@ method start {msg uds} {
 
 method update {have total} {
 	set pdone 0
+	set cdone 0
 	if {$total > 0} {
 		set pdone [expr {100 * $have / $total}]
 		set cdone [expr {[winfo width $w_c] * $have / $total}]
-- 
1.7.8