From 7da970886a08f093966f9ecd457dbc91045411ca Mon Sep 17 00:00:00 2001
From: Nuruddin Ashr <uudashr@gmail.com>
Date: Sat, 6 Apr 2024 00:20:18 +0700
Subject: [PATCH] Utilize defer

---
 future.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/future.go b/future.go
index bbf698b..7cb0647 100644
--- a/future.go
+++ b/future.go
@@ -63,17 +63,17 @@ func (f *Future[T]) Listen(callback SetResultFunc[T]) {
 		callback(f.val, f.err)
 	default:
 		f.mu.Lock()
+		defer f.mu.Unlock()
 		f.callbacks = append(f.callbacks, callback)
-		f.mu.Unlock()
 	}
 }
 
 func (f *Future[T]) notifyCallbacks() {
 	f.mu.Lock()
+	defer f.mu.Unlock()
 	for _, callback := range f.callbacks {
 		callback(f.val, f.err)
 	}
-	f.mu.Unlock()
 }
 
 // Call will converts the sync function call as async call.