Replace 200, HEAD and OPTIONS with constants from net/http

[iBug]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

A previous commit (#241) replaced most HTTP constants with those from standard library net/http, but some was missed. This PR catches 3 of them.

Related Tickets & Documents

• Related Issue: None
• Closes: None

Added/updated tests?

• Yes
• No, and this is why: Trivial changes, tests not required
• I need help with writing tests

Run verifications and test

• make verify is passing (which I believe is not my fault)
• make test is passing

[codecov]

Codecov Report

Merging #243 (295a81b) into main (0eda2fc) will not change coverage.
Report is 1 commits behind head on main.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #243   +/-   ##
=======================================
  Coverage   84.44%   84.44%           
=======================================
  Files           7        7           
  Lines         598      598           
=======================================
  Hits          505      505           
  Misses         82       82           
  Partials       11       11           

Files Changed	Coverage Δ
cors.go	96.02% <ø> (ø)

[coreydaley]

@iBug Would you mind posting the results of the make verify that is not passing for you? Along with what Operating System and Go version that you are using?

[iBug]

@coreydaley Ubuntu 22.04 LTS, Go 1.20.7.

With one exception (first one below), all errors are from files under /usr/local/go/src where my Go installation is located.

canonical_test.go:55:33: missing type in composite literal (typecheck)
        querystring := url.Values{"q": {"golang"}, "format": {"json"}}.Encode()
                                       ^
../../../../usr/local/go/src/runtime/debuglog.go:296:20: StringData not declared by package unsafe (typecheck)
        strData := unsafe.StringData(x)
                          ^
../../../../usr/local/go/src/runtime/heapdump.go:159:37: StringData not declared by package unsafe (typecheck)
        dumpmemrange(unsafe.Pointer(unsafe.StringData(s)), uintptr(len(s)))
                                           ^
../../../../usr/local/go/src/runtime/heapdump.go:202:32: StringData not declared by package unsafe (typecheck)
                dwrite(unsafe.Pointer(unsafe.StringData(pkgpath)), uintptr(len(pkgpath)))

However, if I do make verify inside a Docker container (image golang:1.20-bookworm), then everything's fine. I guess I can tick that checkbox now.