virerror: mark VIR_ERR_AGENT_UNSYNCED as DEPRECATED

Since commit 5e5019bf, we've no longer use
VIR_ERR_AGENT_UNSYNCED anymore.
Mark it as DEPRECATED.
Signed-off-by: NChen Hanxiao <chenhanxiao@gmail.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

include/libvirt/virterror.h

@@ -318,7 +318,7 @@ typedef enum {
     VIR_ERR_NO_SERVER = 95,             /* Server was not found */
     VIR_ERR_NO_CLIENT = 96,             /* Client was not found */
     VIR_ERR_AGENT_UNSYNCED = 97,        /* guest agent replies with wrong id
-                                           to guest-sync command */
+                                           to guest-sync command (DEPRECATED)*/
     VIR_ERR_LIBSSH = 98,                /* error in libssh transport driver */
 } virErrorNumber;
 

src/util/virerror.c

@@ -1441,7 +1441,7 @@ virErrorMsg(virErrorNumber error, const char *info)
             else
                 errmsg = _("Client not found: %s");
             break;
-        case VIR_ERR_AGENT_UNSYNCED:
+        case VIR_ERR_AGENT_UNSYNCED: /* DEPRECATED */
             if (info == NULL)
                 errmsg = _("guest agent replied with wrong id to guest-sync command");
             else