Fix reallocation calculation

Signed-off-by: Christian Brauner <christianvanbrauner@gmail.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>

src/lxc/lxc_info.c

@@ -53,7 +53,7 @@ static int my_parser(struct lxc_arguments* args, int c, char* arg)
 	char **newk;
 	switch (c) {
 	case 'c':
-		newk = realloc(key, keys+1 * sizeof(key[0]));
+		newk = realloc(key, (keys + 1) * sizeof(key[0]));
 		if (!newk)
 			return -1;
 		key = newk;