refactor #853 Use function reference.

Author: toastkidjp

app/src/main/java/jp/toastkid/yobidashi/main/ui/AppBar.kt

@@ -178,8 +178,9 @@ internal fun AppBar() {
 
         OverflowMenu(
             contentViewModel.optionMenus,
-            contentViewModel::switchTabList
-        ) { activity.finish() }
+            contentViewModel::switchTabList,
+            activity::finish
+        )
     }
 
 }