[gtksourceview] build: quote first param of AX_PKG_CHECK_MODULES

[Sébastien Wilmet <swilmet src gnome org>]

commit 27a39d703cb0fecd5b32855e388ce344c9bb39f9
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon Aug 31 06:52:25 2015 +0200

    build: quote first param of AX_PKG_CHECK_MODULES
    
    I don't think it's necessary, but gnome-continuous complains:
    
    ../configure: line 12978: syntax error near unexpected token `DEP,'
    ../configure: line 12978: `AX_PKG_CHECK_MODULES(DEP,'
    
    I think it's because m4/ax_pkg_check_modules.m4 is not installed, so the
    macro isn't recognized.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 2cdb221..ce4a0fc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,7 +87,7 @@ if test "$enable_deprecations" = "no"; then
        AC_SUBST(DISABLE_DEPRECATED_CFLAGS)
 fi
 
-AX_PKG_CHECK_MODULES(DEP,
+AX_PKG_CHECK_MODULES([DEP],
                     [glib-2.0 >= $glib_req  gio-2.0 >= $glib_req  gtk+-3.0 >= $gtk_req],
                     [libxml-2.0 >= $libxml_req])