glib.setupHook: fix make_glib_find_gsettings_schemas

GSETTINGS_SCHEMAS_PATH needs to contain a list of directories containing glib-2.0/schemas.
770a4c7946 broke that by accidentally adding glib-2.0 to the paths.

pkgs/development/libraries/glib/setup-hook.sh

@@ -1,8 +1,8 @@
 
 make_glib_find_gsettings_schemas() {
     # For packages that need gschemas of other packages (e.g. empathy)
-    for maybe_dir in "$1"/share/gsettings-schemas/*/glib-2.0; do
-        if [[ -d "$maybe_dir/schemas" ]]; then
+    for maybe_dir in "$1"/share/gsettings-schemas/*; do
+        if [[ -d "$maybe_dir/glib-2.0/schemas" ]]; then
             addToSearchPath GSETTINGS_SCHEMAS_PATH "$maybe_dir"
         fi
     done