[krbdev.mit.edu #8502] ret_boolean in profile_get_boolean() should be krb5_boolean * instead of int *

[Greg Hudson via RT]

It would be better to change the type of "use" to int in that function.  I 
will submit a PR to do that.  (We actually see a warning in our regular 
builds of locate_kdc.c, but didn't catch it when integrating PR #481 
recently.)