qemu_migration: Rename 'offline' variable in SrcPerformPeer2Peer

The variable is used to store the offline migration capability of the
destination daemon. Let's call it 'dstOffline' so that we can later use
'offline' to indicate whether we were asked to do offline migration.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

src/qemu/qemu_migration.c

@@ -4399,7 +4399,7 @@ qemuMigrationSrcPerformPeer2Peer(virQEMUDriverPtr driver,
     virConnectPtr dconn = NULL;
     bool p2p;
     virErrorPtr orig_err = NULL;
-    bool offline = false;
+    bool dstOffline = false;
     virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
     bool useParams;
 
@@ -4469,7 +4469,7 @@ qemuMigrationSrcPerformPeer2Peer(virQEMUDriverPtr driver,
     useParams = VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
                                          VIR_DRV_FEATURE_MIGRATION_PARAMS);
     if (flags & VIR_MIGRATE_OFFLINE)
-        offline = VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
+        dstOffline = VIR_DRV_SUPPORTS_FEATURE(dconn->driver, dconn,
                                               VIR_DRV_FEATURE_MIGRATION_OFFLINE);
     qemuDomainObjExitRemote(vm);
 
@@ -4488,7 +4488,7 @@ qemuMigrationSrcPerformPeer2Peer(virQEMUDriverPtr driver,
         goto cleanup;
     }
 
-    if (flags & VIR_MIGRATE_OFFLINE && !offline) {
+    if (flags & VIR_MIGRATE_OFFLINE && !dstOffline) {
         virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
                        _("offline migration is not supported by "
                          "the destination host"));