fixed the scope for AppComponent

Author: mrtry

app/src/main/java/io/github/mrtry/todolist/di/component/AppComponent.kt

@@ -4,7 +4,9 @@ import dagger.Component
 import io.github.mrtry.todolist.MainApplication
 import io.github.mrtry.todolist.di.module.ActivityModule
 import io.github.mrtry.todolist.di.module.AppModule
+import javax.inject.Singleton
 
+@Singleton
 @Component(modules = [AppModule::class])
 interface AppComponent {
     fun inject(application: MainApplication)