migration: Replace migration's JSON writer by the general one

Commit 8118f0950f "migration: Append JSON description of migration
stream" needs a JSON writer.  The existing qobject_to_json() wasn't a
good fit, because it requires building a QObject to convert.  Instead,
migration got its very own JSON writer, in commit 190c882ce2 "QJSON:
Add JSON writer".  It tacitly limits numbers to int64_t, and strings
contents to characters that don't need escaping, unlike
qobject_to_json().

The previous commit factored the JSON writer out of qobject_to_json().
Replace migration's JSON writer by it.

Cc: Juan Quintela <quintela@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-17-armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/pci/msix.c b/hw/pci/msix.c
index 36491ee52b..ae9331cd0b 100644
--- a/hw/pci/msix.c
+++ b/hw/pci/msix.c
@@ -634,7 +634,7 @@ void msix_unset_vector_notifiers(PCIDevice *dev)
 }
 
 static int put_msix_state(QEMUFile *f, void *pv, size_t size,
-                          const VMStateField *field, QJSON *vmdesc)
+                          const VMStateField *field, JSONWriter *vmdesc)
 {
     msix_save(pv, f);