Add function to initialize http_parser_settings

PR-URL: https://github.com/joyent/http-parser/pull/215
Reviewed-By: Fedor Indutny <fedor@indutny.com>

http_parser.c

@@ -2136,6 +2136,12 @@ http_parser_init (http_parser *parser, enum http_parser_type t)
   parser->http_errno = HPE_OK;
 }
 
+void
+http_parser_settings_init(http_parser_settings *settings)
+{
+  memset(settings, 0, sizeof(*settings));
+}
+
 const char *
 http_errno_name(enum http_errno err) {
   assert(err < (sizeof(http_strerror_tab)/sizeof(http_strerror_tab[0])));

http_parser.h

@@ -288,6 +288,11 @@ unsigned long http_parser_version(void);
 void http_parser_init(http_parser *parser, enum http_parser_type type);
 
 
+/* Initialize http_parser_settings members to 0
+ */
+void http_parser_settings_init(http_parser_settings *settings);
+
+
 /* Executes the parser. Returns number of parsed bytes. Sets
  * `parser->http_errno` on error. */
 size_t http_parser_execute(http_parser *parser,