kvm tools: Add missing space after kernel params

Add missing space so that user-provided kernel params
will be properly concatenated to default params.

Instead of just adding a space at the end, add it with
a separate strcat(), since it's not the first (and wouldn't
have been the last) time a space wasn't added.

Reported-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>

kvm-run.c

@@ -424,6 +424,7 @@ int kvm_cmd_run(int argc, const char **argv, const char *prefix)
 
 	memset(real_cmdline, 0, sizeof(real_cmdline));
 	strcpy(real_cmdline, "notsc noapic noacpi pci=conf1 console=ttyS0 earlyprintk=serial");
+	strcat(real_cmdline, " ");
 	if (kernel_cmdline)
 		strlcat(real_cmdline, kernel_cmdline, sizeof(real_cmdline));