runtime: return 0 from C function in test

This function's prototype includes a return value, so return a value.
Otherwise clang gets upset:

    --- FAIL: TestDLLPreloadMitigation (1.40s)
        syscall_windows_test.go:986: failed to build dll: exit status 1 - nojack.c:7:1: error: non-void function does not return a value [-Werror,-Wreturn-type]
            1 error generated.

Fixes #42860.

Change-Id: I65b8eb9ccb502692c5b65bd34829f331cd86eef0
Trust: Jason A. Donenfeld <>
Trust: Brad Fitzpatrick <>
Reviewed-by: Brad Fitzpatrick <>
1 file changed
tree: a26d114ead48992a41d3c6188cdd7b1210a2da98
  1. .gitattributes
  2. .github/
  3. .gitignore
  11. api/
  12. doc/
  13. favicon.ico
  14. lib/
  15. misc/
  16. robots.txt
  17. src/
  18. test/

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