[gtk+/xi2] Fix configure.in to also work on non-X11 platforms again

[Carlos Garnacho <carlosg src gnome org>]

commit 1614052b31259dad8b379e2671717a22830b2a90
Author: Kristian Rietveld <kris gtk org>
Date:   Sat Feb 6 08:24:20 2010 +0100

    Fix configure.in to also work on non-X11 platforms again

 configure.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.in b/configure.in
index 1132604..7442c98 100644
--- a/configure.in
+++ b/configure.in
@@ -1648,6 +1648,7 @@ else
   XPACKAGES=
 
   AM_CONDITIONAL(XINPUT_XFREE, false)
+  AM_CONDITIONAL(XINPUT_2, false)
   AM_CONDITIONAL(USE_X11, false)
   AM_CONDITIONAL(HAVE_X11R6, false)
 fi