internal/outcome: remove guard on main

This is no longer exported. Such a check is pointless.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/finalise.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"os"
 	"os/user"
-	"sync/atomic"
 
 	"hakurei.app/hst"
 	"hakurei.app/message"
@@ -26,12 +25,9 @@ type outcome struct {
 	sys *system.I
 	// Transmitted to shim. Populated during finalise.
 	state *outcomeState
-	// Kept for saving to [state].
+	// Retained for registering current instance.
 	config *hst.Config
 
-	// Whether the current process is in outcome.main.
-	active atomic.Bool
-
 	ctx context.Context
 	syscallDispatcher
 }

internal/outcome/process.go

@@ -206,10 +206,6 @@ func (ms mainState) fatal(fallback string, ferr error) {
 
 // main carries out outcome and terminates. main does not return.
 func (k *outcome) main(msg message.Msg) {
-	if !k.active.CompareAndSwap(false, true) {
-		panic("outcome: attempted to run twice")
-	}
-
 	if k.ctx == nil || k.sys == nil || k.state == nil {
 		panic("outcome: did not finalise")
 	}