fix this:

util_mutex.c: In function ‘ap_set_mutex’:
util_mutex.c:188: warning: comparison between pointer and integer
util_mutex.c:174: warning: unused variable ‘type’


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@886214 13f79535-47bb-0310-9956-ffa450edef68