Merge r233493 from trunk:

* srclib/pcre/pcre.c (read_repeat_counts): Check for integer overflow.

Obtained from: pcre 6.2 upstream
Reviewed by: jorton, nd, wrowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@290658 13f79535-47bb-0310-9956-ffa450edef68