Instantiate Mutexes's fields by value

Instead, pass the entire Mutexes struct by pointer to controllers.

This is better because Mutexes now has a zero value and doesn't need to be
initialized.

pkg/gui/gui.go

@@ -681,17 +681,6 @@ func NewGui(
 		// real value after loading the user config:
 		ShowExtrasWindow: true,
 
-		Mutexes: types.Mutexes{
-			RefreshingFilesMutex:    &deadlock.Mutex{},
-			RefreshingBranchesMutex: &deadlock.Mutex{},
-			RefreshingStatusMutex:   &deadlock.Mutex{},
-			LocalCommitsMutex:       &deadlock.Mutex{},
-			SubCommitsMutex:         &deadlock.Mutex{},
-			AuthorsMutex:            &deadlock.Mutex{},
-			SubprocessMutex:         &deadlock.Mutex{},
-			PopupMutex:              &deadlock.Mutex{},
-			PtyMutex:                &deadlock.Mutex{},
-		},
 		InitialDir:       initialDir,
 		afterLayoutFuncs: make(chan func() error, 1000),
 

pkg/gui/gui_common.go

@@ -100,8 +100,8 @@ func (self *guiCommon) Model() *types.Model {
 	return self.gui.State.Model
 }
 
-func (self *guiCommon) Mutexes() types.Mutexes {
-	return self.gui.Mutexes
+func (self *guiCommon) Mutexes() *types.Mutexes {
+	return &self.gui.Mutexes
 }
 
 func (self *guiCommon) GocuiGui() *gocui.Gui {

pkg/gui/types/common.go

@@ -94,7 +94,7 @@ type IGuiCommon interface {
 
 	Modes() *Modes
 
-	Mutexes() Mutexes
+	Mutexes() *Mutexes
 
 	State() IStateAccessor
 
@@ -313,18 +313,16 @@ type Model struct {
 	HashPool *utils.StringPool
 }
 
-// if you add a new mutex here be sure to instantiate it. We're using pointers to
-// mutexes so that we can pass the mutexes to controllers.
 type Mutexes struct {
-	RefreshingFilesMutex    *deadlock.Mutex
-	RefreshingBranchesMutex *deadlock.Mutex
-	RefreshingStatusMutex   *deadlock.Mutex
-	LocalCommitsMutex       *deadlock.Mutex
-	SubCommitsMutex         *deadlock.Mutex
-	AuthorsMutex            *deadlock.Mutex
-	SubprocessMutex         *deadlock.Mutex
-	PopupMutex              *deadlock.Mutex
-	PtyMutex                *deadlock.Mutex
+	RefreshingFilesMutex    deadlock.Mutex
+	RefreshingBranchesMutex deadlock.Mutex
+	RefreshingStatusMutex   deadlock.Mutex
+	LocalCommitsMutex       deadlock.Mutex
+	SubCommitsMutex         deadlock.Mutex
+	AuthorsMutex            deadlock.Mutex
+	SubprocessMutex         deadlock.Mutex
+	PopupMutex              deadlock.Mutex
+	PtyMutex                deadlock.Mutex
 }
 
 // A long-running operation associated with an item. For example, we'll show