go/analysis/passes/cgocall: fix typo in comment
go/analysis/passes/cgocall: fix typo in comment

Change-Id: Ie71f93c1fa0d5e7de498ad2af611c4db8a27171d
Reviewed-on: https://go-review.googlesource.com/c/148561
Reviewed-by: Michael Matloob <4562438b12c14e81a47550acde616ff328a909f8@golang.org>

golang/tools,golang/tools,golang/tools,golang/tools,golang/tools