migration: export migrate_get_current()

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>

migration.c

@@ -53,7 +53,7 @@ static NotifierList migration_state_notifiers =
    migrations at once.  For now we don't need to add
    dynamic creation of migration */
 
-static MigrationState *migrate_get_current(void)
+MigrationState *migrate_get_current(void)
 {
     static MigrationState current_migration = {
         .state = MIG_STATE_SETUP,

migration.h

@@ -81,6 +81,7 @@ void remove_migration_state_change_notifier(Notifier *notify);
 bool migration_is_active(MigrationState *);
 bool migration_has_finished(MigrationState *);
 bool migration_has_failed(MigrationState *);
+MigrationState *migrate_get_current(void);
 
 uint64_t ram_bytes_remaining(void);
 uint64_t ram_bytes_transferred(void);