util: Remove NONNULL(2,3) for virHostdevReAttachUSBDevices

The comparison code used STREQ_NULLABLE anyway for both 'drv_name' and
'dom_name', so no need. Add a NULLSTR on the 'dom_name' too.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>

src/util/virhostdev.c

@@ -1624,7 +1624,7 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr mgr,
 
         if (!(usb = virUSBDeviceNew(usbsrc->bus, usbsrc->device, NULL))) {
             VIR_WARN("Unable to reattach USB device %03d.%03d on domain %s",
-                     usbsrc->bus, usbsrc->device, dom_name);
+                     usbsrc->bus, usbsrc->device, NULLSTR(dom_name));
             continue;
         }
 

src/util/virhostdev.h

@@ -110,7 +110,7 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr hostdev_mgr,
                               const char *dom_name,
                               virDomainHostdevDefPtr *hostdevs,
                               int nhostdevs)
-    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
+    ATTRIBUTE_NONNULL(1);
 void
 virHostdevReAttachSCSIDevices(virHostdevManagerPtr hostdev_mgr,
                               const char *drv_name,