hst/config: hold acl struct by value

Doc comments are also reworded for clarity.

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

internal/app/outcome.go

@@ -156,7 +156,7 @@ type outcomeStateSys struct {
 	// Copied from [hst.Config]. Safe for read by spWaylandOp.toSystem only.
 	directWayland bool
 	// Copied header from [hst.Config]. Safe for read by spFinalOp.toSystem only.
-	extraPerms []*hst.ExtraPermConfig
+	extraPerms []hst.ExtraPermConfig
 	// Copied address from [hst.Config]. Safe for read by spDBusOp.toSystem only.
 	sessionBus, systemBus *hst.BusConfig
 

internal/app/spfinal.go

@@ -21,8 +21,9 @@ type spFinalOp struct{}
 
 func (s spFinalOp) toSystem(state *outcomeStateSys) error {
 	// append ExtraPerms last
-	for _, p := range state.extraPerms {
-		if p == nil || p.Path == nil {
+	for i := range state.extraPerms {
+		p := &state.extraPerms[i]
+		if p.Path == nil {
 			continue
 		}