[vinagre] Fix a typo in configure.ac

[Jonh Wendell <jwendell src gnome org>]

commit 5e4269b551ae50dd7d2ac598fe57c73ab61571da
Author: Jonh Wendell <jwendell gnome org>
Date:   Wed Jan 27 08:52:35 2010 -0300

    Fix a typo in configure.ac

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b7f31ec..645bb3b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -197,7 +197,7 @@ dnl ****************************
 dnl *** Checks for ifaddrs.h ***
 dnl ****************************
 AC_CHECK_HEADER(ifaddrs.h)
-AM_CONDITIONAL(SELF_IFADDRS, test "$ac_cv_header_ifaddrs_h" != "xyes")
+AM_CONDITIONAL(SELF_IFADDRS, test "x$ac_cv_header_ifaddrs_h" != "xyes")
 
 dnl active plugins for vinagre.schemas
 ACTIVE_PLUGINS="vnc"