Silence compiler warnings:

- format '%u' expects argument of type 'unsigned int',
  but argument 10 has type 'apr_off_t'
- 'val64' may be used uninitialized in this function


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1725476 13f79535-47bb-0310-9956-ffa450edef68