* string.c (rb_str_upcase_bang, rb_str_capitalize_bang)
(rb_str_swapcase_bang): missing rb_str_modify().


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7340 b2dd03c8-39d4-4d8f-98ff-823fe69b080e