Fix the out-of-bounds memory access in test_string_matching_test.  Follow-up
to r1505336.

* subversion/tests/libsvn_subr/string-test.c
  (test_string_matching): Correctly initialize the 'max_match' value to avoid
    out-of-bounds memory access.

Patch by: Evgeny Kotkov <evgeny.kotkov{_AT_}visualsvn.com>


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1507993 13f79535-47bb-0310-9956-ffa450edef68