[gtk+] test-simplify: Explicitly use bash

[Matthias Clasen <matthiasc src gnome org>]

commit e0d72c537699227992fc72599e59eefbbb209a8f
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 20 12:17:12 2015 -0400

    test-simplify: Explicitly use bash
    
    The script uses bash features, after all.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=755274

 testsuite/tools/test-simplify.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/testsuite/tools/test-simplify.in b/testsuite/tools/test-simplify.in
index 2de4366..6b4f2e8 100755
--- a/testsuite/tools/test-simplify.in
+++ b/testsuite/tools/test-simplify.in
@@ -1,4 +1,4 @@
-#! /bin/sh
+#! /bin/bash
 
 GTK_BUILDER_TOOL=${GTK_BUILDER_TOOL:-gtk-builder-tool}
 TEST_DATA_DIR=${TEST_DATA_DIR:-./simplify}