daemon: Honor error variable name change in the generator

Commit 36b65213 renamed err to rerr, do the same in the generator.

daemon/qemu_dispatch_prototypes.h

@@ -7,6 +7,6 @@ static int qemuDispatchMonitorCommand(
     struct qemud_client *client,
     virConnectPtr conn,
     remote_message_header *hdr,
-    remote_error *err,
+    remote_error *rerr,
     qemu_monitor_command_args *args,
     qemu_monitor_command_ret *ret);

daemon/remote_generate_stubs.pl

@@ -132,7 +132,7 @@ elsif ($opt_p) {
 	print "    struct qemud_client *client,\n";
 	print "    virConnectPtr conn,\n";
 	print "    remote_message_header *hdr,\n";
-	print "    remote_error *err,\n";
+	print "    remote_error *rerr,\n";
 	print "    $calls{$_}->{args} *args,\n";
 	print "    $calls{$_}->{ret} *ret);\n";
     }