usbredir: avoid queuing hello packet on snapshot restore

When launching QEMU with "-loadvm", usbredir_create_parser() should avoid
setting up the hello packet (just as with "-incoming". On the latest version
of libusbredir, usbredirparser_unserialize() will return error if the parser
is not "pristine."

hw/usb/redirect.c

@@ -1280,7 +1280,8 @@ static void usbredir_create_parser(USBRedirDevice *dev)
     }
 #endif
 
-    if (runstate_check(RUN_STATE_INMIGRATE)) {
+    if (runstate_check(RUN_STATE_INMIGRATE) ||
+        runstate_check(RUN_STATE_RESTORE_VM)) {
         flags |= usbredirparser_fl_no_hello;
     }
     usbredirparser_init(dev->parser, VERSION, caps, USB_REDIR_CAPS_SIZE,