[release-branch.go1.11] crypto/x509: explicitly cast printf format argument

After CL 128056 the build fails on darwin/386 with

  src/crypto/x509/root_cgo_darwin.go:218:55: warning: values of type 'SInt32' should not be used as format arguments; add an explicit cast to 'int' instead [-Wformat]
  go build crypto/x509: C compiler warning promoted to error on Go builders

Fix the warning by explicitly casting the argument to an int as
suggested by the warning.

Fixes #30444

Change-Id: Icb6bd622a543e9bc5f669fd3d7abd418b4a8e579
Reviewed-on: https://go-review.googlesource.com/c/152958
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
(cherry picked from commit ec0077c54d6261ba5cbab2c5dc2e80345068233f)
Reviewed-on: https://go-review.googlesource.com/c/164240
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed
tree: 1f6920a1835f04b26c645954d4860c9bc00e7425
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  13. favicon.ico
  16. README.md
  17. robots.txt

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