crtools: Use -o argument directly

There is no much point to strdup this value
obtained from command line. It sits in environment
and we don't modify it at all.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

crtools.c

@@ -162,7 +162,7 @@ int main(int argc, char *argv[])
 			}
 			break;
 		case 'o':
-			opts.output = strdup(optarg);
+			opts.output = optarg;
 			if (log_init(optarg))
 				return -1;
 			log_inited = 1;