compile.c: drop freezestring insn on String#-@
Followup to r62039 and remove the redundant freezestring insn which was preventing deduplication from String#-@
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
compile.c: drop freezestring insn on String#-@
Followup to r62039 and remove the redundant freezestring
insn which was preventing deduplication from String#-@
[ruby-core:85542] [Bug #14475]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62407 b2dd03c8-39d4-4d8f-98ff-823fe69b080e