Followup to r1464667: note a duplication.

* subversion/libsvn_subr/error.c (struct err_defn),
* subversion/tests/libsvn_subr/error-code-test.c (struct err_defn):
    Cross-reference these to each other.

(We could make SVN_ERROR_BUILD_ARRAY define the type (in the svn_* namespace).)


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1464679 13f79535-47bb-0310-9956-ffa450edef68