bug: gcustom.MakeMatcher generated matcher does not accept nil value

If I build a matcher with gcustom.MakeMatcher, it panics on nil actual value

Context("when the match func accepts a nil-able type", func() {
    It("ensure nil matches the type", func() {
        var passedIn any
        m := gcustom.MakeMatcher(func(a *someType) (bool, error) {
            passedIn = a
            return true, nil
        })

        success, err := m.Match(nil)
        Ω(success).Should(BeTrue())
        Ω(err).ShouldNot(HaveOccurred())
        Ω(passedIn).Should(BeNil())
    })
})

• [PANICKED] [0.000 seconds]
MakeMatcher validating and wrapping the MatchFunc when the match func accepts a nil-able type [It] ensure nil matches the type
/home/hou/src/gomega/gcustom/make_matcher_test.go:153

  [PANICKED] Test Panicked
  In [It] at: /usr/local/go/src/runtime/panic.go:260 @ 05/18/23 14:31:58.603

  runtime error: invalid memory address or nil pointer dereference

  Full Stack Trace
    github.com/onsi/gomega/gcustom.MakeMatcher.func1({0xc000013de8, 0x1, 0x1?})
        /home/hou/src/gomega/gcustom/make_matcher.go:103 +0x13c
    github.com/onsi/gomega/gcustom.CustomGomegaMatcher.Match(...)
        /home/hou/src/gomega/gcustom/make_matcher.go:219
    github.com/onsi/gomega/gcustom_test.glob..func1.2.12.1()
        /home/hou/src/gomega/gcustom/make_matcher_test.go:160 +0x155

onsi / gomega

bug: gcustom.MakeMatcher generated matcher does not accept nil value #665