ticket:8451: Fixing some memory leaks in region.cpp


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33053 251d0590-4201-4cf1-90de-194747b24ca1
ticket:8451: Fix memory leaks in region implementation


git-svn-id: http://source.icu-project.org/repos/icu/icu/trunk@33054 251d0590-4201-4cf1-90de-194747b24ca1