node_device: Use the @cap iterator variable

Since the switch statement is already using the deref'd @cap variable
and the VIR_NODE_DEV_CAP_NET case uses it, the SCSI_HOST and PCI_DEV
cases may as well use it too.
Suggested-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Signed-off-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>

src/node_device/node_device_driver.c

@@ -54,7 +54,7 @@ static int update_caps(virNodeDeviceObjPtr dev)
     while (cap) {
         switch (cap->data.type) {
         case VIR_NODE_DEV_CAP_SCSI_HOST:
-            nodeDeviceSysfsGetSCSIHostCaps(&dev->def->caps->data.scsi_host);
+            nodeDeviceSysfsGetSCSIHostCaps(&cap->data.scsi_host);
             break;
         case VIR_NODE_DEV_CAP_NET:
             if (virNetDevGetLinkInfo(cap->data.net.ifname, &cap->data.net.lnk) < 0)
@@ -65,7 +65,7 @@ static int update_caps(virNodeDeviceObjPtr dev)
             break;
         case VIR_NODE_DEV_CAP_PCI_DEV:
            if (nodeDeviceSysfsGetPCIRelatedDevCaps(dev->def->sysfs_path,
-                                                   &dev->def->caps->data.pci_dev) < 0)
+                                                   &cap->data.pci_dev) < 0)
               return -1;
            break;