fix bug number on 

     Avoid a redundant fcntl() call in apr_file_open() where O_CLOEXEC
     is supported.  PR 48557.

(was 46297)


git-svn-id: https://svn.apache.org/repos/asf/apr/apr/branches/1.4.x@1560015 13f79535-47bb-0310-9956-ffa450edef68