First, use addition to test against an unsigned for chunk_start after
  we are certain chunk_start is a positive value.  Second, ap_bread
  is prototyped as an -int- ... not a size_t, not an off_t.
  These changes eliminate all mismatch type/sign errors on Win32.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@94600 13f79535-47bb-0310-9956-ffa450edef68