src/http/modules/ngx_http_headers_filter_module.c:647: error: Uninitialized Value
  The value read from cv.lengths was never initialized.

src/http/modules/ngx_http_headers_filter_module.c:647:9: 
645.     }
646. 
647.     if (cv.lengths != NULL) {
             ^
648. 
649.         hcf->expires_value = ngx_palloc(cf->pool,
