[gtk+] Force the simple im module for reftests

[Matthias Clasen <matthiasc src gnome org>]

commit 085fada849d8a87f89c1bdb9a7e2e9fa01f4e84b
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Jul 14 18:21:50 2014 -0400

    Force the simple im module for reftests
    
    I've seen reftests fail with IBus warnings. We should avoid that.

 testsuite/reftests/Makefile.am |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/testsuite/reftests/Makefile.am b/testsuite/reftests/Makefile.am
index ca2396a..0d03072 100644
--- a/testsuite/reftests/Makefile.am
+++ b/testsuite/reftests/Makefile.am
@@ -1,8 +1,9 @@
 include $(top_srcdir)/Makefile.decl
 NULL =
 
-TESTS_ENVIRONMENT =                    \
-       GSETTINGS_BACKEND=memory        \
+TESTS_ENVIRONMENT =                            \
+       GTK_IM_MODULE=gtk-im-context-simple     \
+       GSETTINGS_BACKEND=memory                \
        G_ENABLE_DIAGNOSTIC=0
 
 TEST_PROGS += gtk-reftest