[anjuta] configure: fix build of vala plugin

[Abderrahim Kitouni <akitouni src gnome org>]

commit 7987963aa3a623d076abfe37a3a5b68c230f94cb
Author: Abderrahim Kitouni <a kitouni gmail com>
Date:   Fri Jan 20 14:40:05 2012 +0100

    configure: fix build of vala plugin

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 61a934a..d5f75bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -270,7 +270,8 @@ else
 					    [ valaver="" ])
 			 ])
 	if test "x$valaver" != "x"; then
-		PKG_CHECK_MODULES([VALA], [ libvala${valaver} ])
+		LIBVALA="libvala${valaver}"
+		PKG_CHECK_MODULES([VALA], ${LIBVALA})
 	fi
 	AC_SUBST(LIBVALA)
 fi