[glib] build: Add missing test GSchema XML file to dist list

[Philip Withnall <pwithnall src gnome org>]

commit eba53aa07e86f300ff6a5df68d32caf8a2752d27
Author: Philip Withnall <withnall endlessm com>
Date:   Mon Jan 8 12:05:21 2018 +0000

    build: Add missing test GSchema XML file to dist list
    
    This was introduced in bug #742997, but not added to the Makefile.am, so
    it’s missing from tarballs.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    Reviewed-by: nobody
    
    https://bugzilla.gnome.org/show_bug.cgi?id=792322

 gio/tests/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gio/tests/Makefile.am b/gio/tests/Makefile.am
index d7e6554..14cd928 100644
--- a/gio/tests/Makefile.am
+++ b/gio/tests/Makefile.am
@@ -140,6 +140,7 @@ schema_tests = \
        enum-with-chained-alias.gschema.xml             \
        enum-with-choice.gschema.xml                    \
        enum-with-invalid-alias.gschema.xml             \
+       enum-with-invalid-value.gschema.xml             \
        enum-with-repeated-alias.gschema.xml            \
        enum-with-repeated-nick.gschema.xml             \
        enum-with-repeated-value.gschema.xml            \