Properly check the return value of CCWAddressAsString

It returns NULL on failure. Checking if the negation of it
is less than zero makes no sense. (Found by coverity after moving
the code)

In another case, the return value wasn't checked at all.

(cherry picked from commit 3fe9d75ab641f5b676845980a0ee7aef8148da9b)

Conflicts:
	src/conf/domain_addr.c - no code movement from commit b2626755

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 9a314bf8d5f1cfb38d5c0375f6147083190e03eb..eb05d9482c16ff820a5b1cf51cd74c5d4488d6ec 100644 (file)
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1130,7 +1130,7 @@ int qemuDomainCCWAddressAssign(virDomainDeviceInfoPtr dev,
             goto cleanup;
         }
     } else if (autoassign && !dev->addr.ccw.assigned) {
-        if (!(addr = qemuCCWAddressAsString(&addrs->next)) < 0)
+        if (!(addr = qemuCCWAddressAsString(&addrs->next)))
             goto cleanup;
 
         while (virHashLookup(addrs->defined, addr)) {
@@ -1140,7 +1140,8 @@ int qemuDomainCCWAddressAssign(virDomainDeviceInfoPtr dev,
                 goto cleanup;
             }
             VIR_FREE(addr);
-            addr = qemuCCWAddressAsString(&addrs->next);
+            if (!(addr = qemuCCWAddressAsString(&addrs->next)))
+                goto cleanup;
         }
         dev->addr.ccw = addrs->next;
         dev->addr.ccw.assigned = true;