qemu: Fix a regression of domjobabort

Introduced by f9a837da73, the condition is not changed after
the else clause is removed. So now it quit with "domain is not
running" when the domain is running. However, when the domain is
not running, it reports "no job is active".

How to reproduce:

1)
% virsh start $domain
% virsh domjobabort $domain
error: Requested operation is not valid: domain is not running

2)
% virsh destroy $domain
% virsh domjobabort $domain
error: Requested operation is not valid: no job is active on the domain

3)
% virsh save $domain /tmp/$domain.save

Before above commands finished, try to abort job in another terminal

% virsh domabortjob $domain
error: Requested operation is not valid: domain is not running

src/qemu/qemu_driver.c

@@ -8065,7 +8065,7 @@ static int qemuDomainAbortJob(virDomainPtr dom) {
     if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_ABORT) < 0)
         goto cleanup;
 
-    if (virDomainObjIsActive(vm)) {
+    if (!virDomainObjIsActive(vm)) {
         qemuReportError(VIR_ERR_OPERATION_INVALID,
                         "%s", _("domain is not running"));
         goto endjob;