commit f5eacf2a9ad2b7ba07dd0fc745c098cd2d26b6ee
Author: Jim Fehlig <jfehlig@suse.com>
Date:   Tue Mar 13 11:05:36 2018 -0600

    libxl: MigratePerform: properly cleanup after libxlDomObjFromDomain
    
    libxlDomObjFromDomain to returns locked and ref counted virDomainObj but
    libxlDomainMigratePerform3Params only unlocks the object on exit. Convert
    it to use the virDomainObjEndAPI function for cleanup.
    
    Signed-off-by: Jim Fehlig <jfehlig@suse.com>
    Reviewed-by: John Ferlan <jferlan@redhat.com>

Index: libvirt-4.1.0/src/libxl/libxl_driver.c
===================================================================
--- libvirt-4.1.0.orig/src/libxl/libxl_driver.c
+++ libvirt-4.1.0/src/libxl/libxl_driver.c
@@ -6086,8 +6086,7 @@ libxlDomainMigratePerform3Params(virDoma
     ret = 0;
 
  cleanup:
-    if (vm)
-        virObjectUnlock(vm);
+    virDomainObjEndAPI(&vm);
     return ret;
 }