src/http/ngx_http_core_module.c:2229: error: Uninitialized Value
  The value read from p was never initialized.

src/http/ngx_http_core_module.c:2229:5: 
2227.     }
2228. 
2229.     p += 4;
          ^
2230. 
2231.     while (p < last) {
