tree e19c572ed36a99124d5bc990ba1980d629a0bfd1
parent 49588d5d9089589ccda28c41aae90c29d6f72787
author rsc <devnull@localhost> 1071635709 +0000
committer rsc <devnull@localhost> 1071635709 +0000
golang-hg b5e858ee242d41f6aa966a948eb8436682383ccc

add Lock to struct Ref.