doc.Example should not worry about unresolved blank identifiers

https://golang.org/pkg/bufio/#example_Scanner_custom is not directly
runnable in the playground via godoc, but if I copy+paste the code into
https://play.golang.org/ then it runs just fine.

This seems to be due to the blank identifier being considered unresolved
in the following line in the example:

_, err = strconv.ParseInt(string(token), 10, 32)

But that's the whole point of blank identifiers- they're not supposed
to be resolved.  So let's skip adding the blank identifier to
doc.playExample's unresolved map.

Fixes #26447

Change-Id: I52bc7d99be1d14a61dc012d10c18349d52ba4c51
GitHub-Last-Rev: 9172e9dc1378b0f37f96fc2e1ade4dda9d848398
GitHub-Pull-Request: golang/go#26448
Reviewed-on: https://go-review.googlesource.com/124775
Reviewed-by: Robert Griesemer <gri@golang.org>
1 file changed
tree: a2c4fa00d523a2cb45c9bf7196b808d655cd7330
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
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