qemu: Remove unused persistentAddrs

Based on some digital archaeology performed by jtomko, it's been determined
that the persistentAddrs variable is no longer necessary...

The variable was added by:
commit 141dea6b
CommitDate: 2010-02-12 17:25:52 +0000
    Add persistence of PCI addresses to QEMU

Where it was set to 0 on domain startup if qemu did not support the
QEMUD_CMD_FLAG_DEVICE capability, to clear the addresses at shutdown,
because QEMU might make up different ones next time.

As of commit f5dd58a6
CommitDate: 2012-07-11 11:19:05 +0200
    qemu: Extended qemuDomainAssignAddresses to be callable from
    everywhere.

this was broken, when the persistentAddrs = 0 assignment was moved
inside qemuDomainAssignPCIAddresses and while it pretends to check
for !QEMU_CAPS_DEVICE, its parent qemuDomainAssignAddresses is only
called if QEMU_CAPS_DEVICE is present.

src/qemu/qemu_domain.h

@@ -190,7 +190,6 @@ struct _qemuDomainObjPrivate {
     virDomainPCIAddressSetPtr pciaddrs;
     virDomainCCWAddressSetPtr ccwaddrs;
     virDomainVirtioSerialAddrSetPtr vioserialaddrs;
-    int persistentAddrs;
 
     virQEMUCapsPtr qemuCaps;
     char *lockState;

src/qemu/qemu_domain_address.c

@@ -149,7 +149,6 @@ qemuDomainAssignVirtioSerialAddresses(virDomainDefPtr def,
         priv = obj->privateData;
         /* if this is the live domain object, we persist the addresses */
         virDomainVirtioSerialAddrSetFree(priv->vioserialaddrs);
-        priv->persistentAddrs = 1;
         priv->vioserialaddrs = addrs;
         addrs = NULL;
     }
@@ -382,11 +381,8 @@ qemuDomainAssignS390Addresses(virDomainDefPtr def,
         if (addrs) {
             /* if this is the live domain object, we persist the CCW addresses*/
             virDomainCCWAddressSetFree(priv->ccwaddrs);
-            priv->persistentAddrs = 1;
             priv->ccwaddrs = addrs;
             addrs = NULL;
-        } else {
-            priv->persistentAddrs = 0;
         }
     }
     ret = 0;
@@ -1616,7 +1612,6 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
         priv = obj->privateData;
         /* if this is the live domain object, we persist the PCI addresses */
         virDomainPCIAddressSetFree(priv->pciaddrs);
-        priv->persistentAddrs = 1;
         priv->pciaddrs = addrs;
         addrs = NULL;
     }

src/qemu/qemu_process.c

@@ -5754,16 +5754,6 @@ void qemuProcessStop(virQEMUDriverPtr driver,
     priv->qemuDevices = NULL;
 
     virDomainDefClearDeviceAliases(vm->def);
-    if (!priv->persistentAddrs) {
-        virDomainDefClearPCIAddresses(vm->def);
-        virDomainPCIAddressSetFree(priv->pciaddrs);
-        priv->pciaddrs = NULL;
-        virDomainDefClearCCWAddresses(vm->def);
-        virDomainCCWAddressSetFree(priv->ccwaddrs);
-        priv->ccwaddrs = NULL;
-        virDomainVirtioSerialAddrSetFree(priv->vioserialaddrs);
-        priv->vioserialaddrs = NULL;
-    }
 
     qemuHostdevReAttachDomainDevices(driver, vm->def);