[gtk-osx] Fix gtk-spell introspection build failure because of Vala.

[John Ralls <jralls src gnome org>]

commit 3e661159324a811388513699f8e0175fb5803ff8
Author: John Ralls <jralls ceridwen us>
Date:   Thu Aug 13 11:13:00 2020 -0700

    Fix gtk-spell introspection build failure because of Vala.
    
    Specifically vala introspection doesn't work without vala being installed.

 modulesets-stable/gtk-osx-random.modules | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/modulesets-stable/gtk-osx-random.modules b/modulesets-stable/gtk-osx-random.modules
index 8a5cf54..673499b 100644
--- a/modulesets-stable/gtk-osx-random.modules
+++ b/modulesets-stable/gtk-osx-random.modules
@@ -254,7 +254,7 @@ Libglade itself is deprecated. This is the last release. -->
     </dependencies>
   </autotools>
 
-  <autotools id="gtkspell3" autogen-sh="configure">
+  <autotools id="gtkspell3" autogen-sh="configure" autogenargs="--enable-vala=no">
     <branch module="gtkspell/gtkspell3-3.0.9.tar.xz" repo="sourceforge"
             version="3.0.9">
       <patch 
file="https://gitlab.gnome.org/GNOME/gtk-osx/raw/master/patches/0001-Enable-use-of-XDG_DATA_DIRS-for-locating-iso-code-fi.patch";
 strip="1"/>