[PATCH] vl: fix leak of qdict_crumple return value

[Paolo Bonzini <pbonzini@redhat.com>]

Coverity reports that qemu_parse_config_group is returning without
unrefing the "crumpled" dictionary in case its top level item is a
list.  But actually the contract with qemu_record_config_group is
the same as for qemu_parse_config_group itself: if those function
need to stash the dictionary they get, they have to take a reference
themselves (currently this is never the case for either function).
Therefore, just add an unconditional qobject_unref(crumpled) to
qemu_parse_config_group.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 softmmu/vl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/softmmu/vl.c b/softmmu/vl.c
index 2004d57108..7b54ddf6f4 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -2196,9 +2196,10 @@ static void qemu_parse_config_group(const char *group, QDict *qdict,
     if (qobject_type(crumpled) != QTYPE_QDICT) {
         assert(qobject_type(crumpled) == QTYPE_QLIST);
         error_setg(errp, "Lists cannot be at top level of a configuration section");
-        return;
+    } else {
+        qemu_record_config_group(group, qobject_to(QDict, crumpled), false, errp);
     }
-    qemu_record_config_group(group, qobject_to(QDict, crumpled), false, errp);
+    qobject_unref(crumpled);
 }
 
 static void qemu_read_default_config_file(Error **errp)
-- 
2.31.1