[glib/wip/smcv/deprecated-prop-followup: 3/3] Run all tests with deprecated property warnings enabled

[Simon McVittie <smcv src gnome org>]

commit a15651215274d9c20c41e3a3f02bde824cbdd8b1
Author: Simon McVittie <smcv collabora com>
Date:   Tue Sep 13 11:36:18 2022 +0100

    Run all tests with deprecated property warnings enabled
    
    Signed-off-by: Simon McVittie <smcv collabora com>

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index 22335c35ce..d8b80fff0d 100644
--- a/meson.build
+++ b/meson.build
@@ -2373,6 +2373,7 @@ endif
 
 common_test_env = [
   'G_DEBUG=gc-friendly',
+  'G_ENABLE_DIAGNOSTIC=1',
   'MALLOC_CHECK_=2',
 ]
 test_timeout = 60