change NewEventHook to return pointer

gomu.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"github.com/issadarkthing/gomu/anko"
+	"github.com/issadarkthing/gomu/hook"
 	"github.com/rivo/tview"
 	"github.com/ztrue/tracerr"
-	"github.com/issadarkthing/gomu/anko"
 )
 
 var VERSION = "N/A"
@@ -25,6 +26,7 @@ type Gomu struct {
 	panels    []Panel
 	args      Args
 	anko      anko.Anko
+	hook      *hook.EventHook
 }
 
 // Creates new instance of gomu with default values
@@ -33,6 +35,7 @@ func newGomu() *Gomu {
 	gomu := &Gomu{
 		command: newCommand(),
 		anko:    anko.NewAnko(),
+		hook:    hook.NewEventHook(),
 	}
 
 	return gomu

hook/hook.go

@@ -4,8 +4,8 @@ type EventHook struct {
 	events map[string][]func()
 }
 
-func NewEventHook() EventHook {
-	return EventHook{make(map[string][]func())}
+func NewEventHook() *EventHook {
+	return &EventHook{make(map[string][]func())}
 }
 
 func (e *EventHook) AddHook(eventName string, handler func()) {
@@ -13,6 +13,7 @@ func (e *EventHook) AddHook(eventName string, handler func()) {
 	hooks, ok := e.events[eventName]
 	if !ok {
 		e.events[eventName] = []func(){handler}
+		return
 	}
 
 	e.events[eventName] = append(hooks, handler)