code review 133580043: go/parser: initialize file set even in only some tests ...

go/parser: initialize file set even in only some tests are run

Without this fix, some tests crashed (e.g. go test -run Invalid).

[gri, 2014-09-04 17:33:36]

Hello adonovan (cc: golang-codereviews@googlegroups.com),

I'd like you to review this change to
https://code.google.com/p/go

[adonovan, 2014-09-04 17:34:21]

On 2014/09/04 17:33:36, gri wrote:
> Hello adonovan (cc: mailto:golang-codereviews@googlegroups.com),
> 
> I'd like you to review this change to
> https://code.google.com/p/go

LGTM

[gri, 2014-09-04 17:43:07]

*** Submitted as https://code.google.com/p/go/source/detail?r=0c34407aaa88 ***

go/parser: initialize file set even in only some tests are run

Without this fix, some tests crashed (e.g. go test -run Invalid).

LGTM=adonovan
R=adonovan
CC=golang-codereviews
https://codereview.appspot.com/133580043