Allocate exact amount of memory in Parrot_str_write_COW. chromatic++ for pointing out on this non-sense
Allocate exact amount of memory in Parrot_str_write_COW. chromatic++ for pointing out on this non-sense

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@45315 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot