apache Prototype for function sendfile_nonblocking is not used when !APR_HAS_SENDFILE.

Bug fixed by commit 56d9881993f
Type DeadCode
Config "!APR_HAS_SENDFILE" (1st degree)
Fix-in mapping
Location server/
void sendfile_nonblocking();

void send_brigade_nonblocking()
{
#if APR_HAS_SENDFILE
  sendfile_nonblocking();
#endif
}

int main(void)
{
  send_brigade_nonblocking();
  return 0;
}
. // if APR_HAS_SENDFILE is disabled
. ERROR server/core_filters.c:331:static apr_status_t sendfile_nonblocking();