[pygtk] typo in configure variable

[John Stowers <jstowers src gnome org>]

commit bb95948271a2db1df1343b94451e0f5a90442bfd
Author: Anders F Bjorklund <afb users sourceforge net>
Date:   Tue Apr 5 15:05:13 2011 +0200

    typo in configure variable
    
    https://bugzilla.gnome.org/show_bug.cgi?id=646743

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e2248c5..612ecbc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -445,7 +445,7 @@ case $gdk_target in
         ;;
 esac
 
-if test "x$gdktarget" = "xquartz"; then
+if test "x$gdk_target" = "xquartz"; then
   AM_CONDITIONAL(USE_QUARTZ, true)
 else
   AM_CONDITIONAL(USE_QUARTZ, false)