add missing argument to usage message.
Fixes #912.

R=rsc
CC=golang-dev
https://golang.org/cl/1819041
1 file changed
tree: 50af9eb974890519a8aa9dfa5c20517a6a2ec830
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  3. lib/
  4. misc/
  5. pkg/
  6. src/
  7. test/
  8. .hgignore
  9. .hgtags
  10. AUTHORS
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. README