cJSON_ParseWithOpts: Fix -Wmissing-field-initializers

cJSON.c

@@ -962,7 +962,7 @@ static parse_buffer *buffer_skip_whitespace(parse_buffer * const buffer)
 /* Parse an object - create a new root, and populate. */
 CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value, const char **return_parse_end, cJSON_bool require_null_terminated)
 {
-    parse_buffer buffer = { 0 };
+    parse_buffer buffer = { 0, 0, 0 };
     cJSON *item = NULL;
 
     /* reset error position */