engine: allow NULL handle

We use a NULL handle in case we don't care about the return value.  In that
case, we certainly don't care about the return type either, so use NULL for
expected_type in this case.

1 files changed, 4 insertions, 1 deletions

diff --git a/engine/dconf-engine.c b/engine/dconf-engine.c
index 706a856..af98cdf 100644
--- a/engine/dconf-engine.c
+++ b/engine/dconf-engine.c
@@ -707,7 +707,10 @@ dconf_engine_call_handle_new (DConfEngine                   *engine,
 const GVariantType *
 dconf_engine_call_handle_get_expected_type (DConfEngineCallHandle *handle)
 {
-  return handle->expected_reply;
+  if (handle)
+    return handle->expected_reply;
+  else
+    return NULL;
 }
 
 void