[gimp] configure.ac: fix last commit

[Ell <ell src gnome org>]

commit 51e4549d5c2138105e2aa26e046e7a265dc28652
Author: Ell <ell_se yahoo com>
Date:   Sun Mar 8 13:08:56 2020 +0200

    configure.ac: fix last commit
    
    Removed a little bit too much.

 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/configure.ac b/configure.ac
index 310790b3ad..b04a48a35f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -714,6 +714,11 @@ PKG_CHECK_MODULES(GEGL, gegl-gegl_major_minor_version >= gegl_required_version,,
 PKG_CHECK_MODULES(ATK, atk >= atk_required_version,,
                   [add_deps_error([atk >= atk_required_version])])
 
+AM_PATH_GLIB_2_0(glib_required_version,,
+                 [add_deps_error([glib >= glib_required_version],
+                                 [Test for GLIB failed])],
+                 gobject)
+
 PKG_CHECK_MODULES(GMODULE_NO_EXPORT, gmodule-no-export-2.0,,
                   [add_deps_error([gmodule-no-export-2.0])])