Fix for conditional build

This fixes the conditional build for Linux and hopefully also works for
the operating systems that don't support seccomp.

Author: brejoc

bscdiff.go

@@ -15,12 +15,6 @@ import (
 	"sort"
 )
 
-func init() {
-	// The syscall restriciton is only available for Linux right now via
-	// seccomp.
-	applySyscallRestrictions()
-}
-
 type searchResult struct {
 	line  int
 	match []string

syscall-restrictions-linux.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package main
@@ -9,6 +10,12 @@ import (
 	libseccomp "github.com/seccomp/libseccomp-golang"
 )
 
+func init() {
+	// The syscall restriciton is only available for Linux right now via
+	// seccomp.
+	applySyscallRestrictions()
+}
+
 func applySyscallRestrictions() {
 
 	var syscalls = []string{"read", "write", "close", "fstat", "mmap",