Merge branch 'maint' of git://repo.or.cz/git-gui into maint

* 'maint' of git://repo.or.cz/git-gui:
  git-gui: Don't display CR within console windows
  git-gui: Handle progress bars from newer gits
  git-gui: Correctly report failures from git-write-tree
  git-gui: accept versions containing text annotations, like 1.5.3.mingw.1
  git-gui: Don't crash when starting gitk from a browser session
  git-gui: Allow gitk to be started on Cygwin with native Tcl/Tk
  git-gui: Ensure .git/info/exclude is honored in Cygwin workdirs
  git-gui: Handle starting on mapped shares under Cygwin
  git-gui: Display message box when we cannot find git in $PATH
  git-gui: Avoid using bold text in entire gui for some fonts

git-gui/lib/commit.tcl

@@ -253,7 +253,7 @@ proc commit_committree {fd_wt curHEAD msg} {
 	global repo_config
 
 	gets $fd_wt tree_id
-	if {$tree_id eq {} || [catch {close $fd_wt} err]} {
+	if {[catch {close $fd_wt} err]} {
 		error_popup "write-tree failed:\n\n$err"
 		ui_status {Commit failed.}
 		unlock_index