Fix internal/syscall/unix to compile with Go 1.16.

nevkontakte · nevkontakte · commit 03ae6be36045 · 2021-03-09T14:49:49.000Z
Looks like a few new functions were added to the package, with a few new constants. Neither of them are really relevant in the JS context and arguably we shouldn't be compiling this code in the first place (see issue #991), but this lets the package compile for now.
diff --git a/compiler/natives/src/internal/syscall/unix/unix.go b/compiler/natives/src/internal/syscall/unix/unix.go
@@ -4,8 +4,12 @@ package unix
 
 import "syscall"
 
-const randomTrap = 0
-const fstatatTrap = 0
+const (
+	randomTrap        uintptr = 0
+	fstatatTrap       uintptr = 0
+	getrandomTrap     uintptr = 0
+	copyFileRangeTrap uintptr = 0
+)
 
 func IsNonblock(fd int) (nonblocking bool, err error) {
 	return false, nil
