[folks] Correctly check for existence of Zeitgeist.

[Travis Reitter <treitter src gnome org>]

commit a24ec72eecd68cda328cd93f8896e3c1d9952452
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Thu Apr 25 17:45:42 2013 -0700

    Correctly check for existence of Zeitgeist.

 configure.ac |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 117ff4a..de10a95 100644
--- a/configure.ac
+++ b/configure.ac
@@ -207,8 +207,9 @@ AS_IF([test x$enable_telepathy_backend = xyes], [
 case "x$enable_zeitgeist" in
   xyes)
     AS_IF([test x$enable_telepathy_backend = xyes],
-          [PKG_CHECK_MODULES([ZEITGEIST], [zeitgeist-1.0 >= $ZEITGEIST_REQUIRED])]
-          [AC_MSG_ERROR([Zeitgeist support requires Zeitgeist development package])])
+          [PKG_CHECK_MODULES([ZEITGEIST], [zeitgeist-1.0 >= $ZEITGEIST_REQUIRED], 
+           ,
+           [AC_MSG_ERROR([Zeitgeist support requires Zeitgeist development package])])])
     have_zeitgeist=yes
     ;;
   xauto)