net/http: update bundled http2

Updates http2 to x/net/http2 git rev 973f3f3 for:

   http2: make Transport treat http.NoBody like it were nil

Updates #18891

Change-Id: I846ccf286992ed2c6249014e51fdeb40b35e50ed
Run-TryBot: Brad Fitzpatrick <>
Reviewed-by: Ian Lance Taylor <>
TryBot-Result: Gobot Gobot <>
1 file changed
tree: 2b3765f8cdc33c011db9c1760b84c66b878df319
  1. .gitattributes
  2. .github/
  3. .gitignore
  10. api/
  11. doc/
  12. favicon.ico
  13. lib/
  14. misc/
  15. robots.txt
  16. src/
  17. test/

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