cmd/godoc: search causes panic when full text indexing is disabled.

[gopherbot]

by bgarcia@golang.org:

What steps will reproduce the problem?

Run with --maxresults=0 to turn off full text indexing:
godoc -http=:7070 -index -v --maxresults=0

Enter a search term that contains one or more characters that cannot be part of an
identifier, such as "-".  A panic will occur, and the client browser will
receive no reply.

[gopherbot]

Comment 1 by bgarcia@golang.org:

This issue was closed by revision golang/tools@804b965.

Status changed to Fixed.

[gopherbot]

Comment 2 by dbenbenn:

I can't seem to find revision f7bb19728717; the link
https://code.google.com/p/go/source/detail?r=f7bb19728717 is 404.

[bradfitz]

Comment 3:

The auto-linkifier sucks at understanding sub-repos.  Need to append &repo=tools:
https://code.google.com/p/go/source/detail?r=f7bb197287174c7e84035e0bc66ffd355522ab8b&repo=tools