Detect runaway chunks in ngx_http_parse_chunked(). As defined in HTTP/1.1, body chunks have the following ABNF: chunk = chunk-size [ chunk-ext ] CRLF chunk-data CRLF where chunk-data is a sequence of chunk-size octets. With this change, chunk-data that doesn't end up with CRLF at chunk-size offset will be treated as invalid, such as in the example provided below: 4 SEE-THIS-AND- 4 THAT 0