[folks] Don't break the build if building folks-inspect without Vala

[Travis Reitter <treitter src gnome org>]

commit 697a12646bd7d25c68c3042f13b3b9e323427262
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Thu Dec 30 23:19:31 2010 -0800

    Don't break the build if building folks-inspect without Vala

 configure.ac |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 662980d..8fc67f0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -199,11 +199,12 @@ AC_ARG_ENABLE([inspect-tool],
                              [Enable building the data inspection tool]),
               [enable_inspect_tool=$enableval with_inspect_tool=$enableval],
               [enable_inspect_tool=maybe with_inspect_tool=no])
-AS_IF([test "$enable_inspect_tool" != "no"],
+AS_IF([test "$enable_inspect_tool" != "no" -a "x$enable_vala" = "xyes"],
       [AC_CHECK_LIB([readline], [main],
                     [with_inspect_tool=yes], [with_inspect_tool=no],
                     [-lncurses])])
-AS_IF([test "$enable_inspect_tool" != "no" -a "$with_inspect_tool" = "yes"],
+AS_IF([test "$enable_inspect_tool" != "no" -a "$with_inspect_tool" = "yes" -a
+       "x$enable_vala" = "xyes"],
       [VALA_CHECK_PACKAGES([readline])
        LIBREADLINE="-lreadline -lncurses"
        AC_DEFINE([HAVE_LIBREADLINE], [1], [Define if you have libreadline])