[libsoup] build-sys: Fix non-introspection build

[Dan Winship <danw src gnome org>]

commit 1d62c41906e5f248bb6625d6e9e0478961624332
Author: Quentin Glidic <sardemff7+git sardemff7 net>
Date:   Tue Sep 22 09:27:59 2015 +0200

    build-sys: Fix non-introspection build
    
    The exact same check is done by VAPIGEN_CHECK already
    Doing it here just breaks the build without introspection because the
    ENABLE_VAPIGEN Automake conditional is then undefined
    
    https://bugzilla.gnome.org/show_bug.cgi?id=755389
    
    Signed-off-by: Quentin Glidic <sardemff7+git sardemff7 net>

 configure.ac |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7fb9fa4..d15b40c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -162,9 +162,7 @@ dnl *** gobject-introspection ***
 dnl *****************************
 GOBJECT_INTROSPECTION_CHECK([0.9.5])
 
-if test "x$found_introspection" = "xyes"; then
-  VAPIGEN_CHECK()
-fi
+VAPIGEN_CHECK()
 
 AC_MSG_CHECKING([for glib-networking (glib TLS implementation)])
 save_CFLAGS="$CFLAGS"