[ruby/yarp] Update src/util/yp_string_list.c style

https://github.com/ruby/yarp/commit/e4af2b3bc2

yarp/util/yp_string_list.c

@@ -12,7 +12,7 @@ yp_string_list_init(yp_string_list_t *string_list) {
 void
 yp_string_list_append(yp_string_list_t *string_list, yp_string_t *string) {
     if (string_list->length + 1 > string_list->capacity) {
-        yp_string_t * original_string = string_list->strings;
+        yp_string_t *original_string = string_list->strings;
         string_list->capacity *= 2;
         string_list->strings = (yp_string_t *) malloc(string_list->capacity * sizeof(yp_string_t));
         memcpy(string_list->strings, original_string, (string_list->length) * sizeof(yp_string_t));