[gnome-builder] clang: add some stubs for valgrind testing

[Christian Hergert <chergert src gnome org>]

commit 2e29db79532792197462b21cbdb6509c57ce75a8
Author: Christian Hergert <chergert redhat com>
Date:   Sun Apr 22 01:26:53 2018 -0700

    clang: add some stubs for valgrind testing

 src/plugins/clang/test-daemon.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/plugins/clang/test-daemon.c b/src/plugins/clang/test-daemon.c
index 05c262de5..2cb63c143 100644
--- a/src/plugins/clang/test-daemon.c
+++ b/src/plugins/clang/test-daemon.c
@@ -416,6 +416,11 @@ main (gint   argc,
 
   subprocess = g_subprocess_new (G_SUBPROCESS_FLAGS_STDIN_PIPE | G_SUBPROCESS_FLAGS_STDOUT_PIPE,
                                  &error,
+#if 0
+                                 "valgrind",
+                                 "--suppressions=glib.supp",
+                                 "--leak-check=full",
+#endif
                                  argv[1],
                                  NULL);