visually shorten logic

context.go

@@ -294,12 +294,10 @@ func checkRequiredFlags(flags []Flag, set *flag.FlagSet) error {
 	})
 
 	for _, f := range flags {
-		if rf, ok := f.(RequiredFlag); ok {
-			if rf.IsRequired() {
-				key := strings.Split(f.GetName(), ",")[0]
-				if !visited[key] {
-					return fmt.Errorf("Required flag %q not set", f.GetName())
-				}
+		if rf, ok := f.(RequiredFlag); ok && rf.IsRequired() {
+			key := strings.Split(f.GetName(), ",")[0]
+			if !visited[key] {
+				return fmt.Errorf("Required flag %q not set", f.GetName())
 			}
 		}
 	}