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.

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>
1 file changed
tree: fc5c1958db0b63bd7c27d91dbd3bbd35b6431ca7
  1. .gitattributes
  2. .github/
  3. .gitignore
  4. AUTHORS
  5. CONTRIBUTING.md
  6. CONTRIBUTORS
  7. LICENSE
  8. PATENTS
  9. README.md
  10. api/
  11. doc/
  12. favicon.ico
  13. lib/
  14. misc/
  15. robots.txt
  16. src/
  17. test/
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