fix:do not export formatmessage

Author: mertakman

internal/bcrypt/ntstatus.go

@@ -25,7 +25,7 @@ func langID(pri, sub uint16) uint32 { return uint32(sub)<<10 | uint32(pri) }
 
 func (s NTStatus) Error() string {
 	b := make([]uint16, 300)
-	n, err := FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_FROM_HMODULE|FORMAT_MESSAGE_ARGUMENT_ARRAY, modntdll.Handle(), uint32(s), langID(LANG_ENGLISH, SUBLANG_ENGLISH_US), b, nil)
+	n, err := formatMessage(FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_FROM_HMODULE|FORMAT_MESSAGE_ARGUMENT_ARRAY, modntdll.Handle(), uint32(s), langID(LANG_ENGLISH, SUBLANG_ENGLISH_US), b, nil)
 	if err != nil {
 		return fmt.Sprintf("NTSTATUS 0x%08x", uint32(s))
 	}
@@ -39,4 +39,4 @@ func (s NTStatus) Error() string {
 //sys	rtlNtStatusToDosErrorNoTeb(ntstatus NTStatus) (ret syscall.Errno) = ntdll.RtlNtStatusToDosErrorNoTeb
 
 // windows api calls
-//sys	FormatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW
+//sys	formatMessage(flags uint32, msgsrc uintptr, msgid uint32, langid uint32, buf []uint16, args *byte) (n uint32, err error) = FormatMessageW