From 9e8f901b04fd7af053521fb6bff1974097a26493 Mon Sep 17 00:00:00 2001
From: Viktor Lidholt <viktorl@google.com>
Date: Mon, 26 Oct 2015 16:32:57 -0700
Subject: [PATCH] Fixes inferred type warning

---
 packages/flutter_sprites/lib/src/physics_collision_groups.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/flutter_sprites/lib/src/physics_collision_groups.dart b/packages/flutter_sprites/lib/src/physics_collision_groups.dart
index 150e5e5e60e..b40043b57c5 100644
--- a/packages/flutter_sprites/lib/src/physics_collision_groups.dart
+++ b/packages/flutter_sprites/lib/src/physics_collision_groups.dart
@@ -7,7 +7,7 @@ class _PhysicsCollisionGroups {
     getBitmaskForKeys(["Default"]);
   }
 
-  Map<Object,int> keyLookup = {};
+  Map<Object,int> keyLookup = <Object,int>{};
 
   List<Object> getKeysForBitmask(int bitmask) {
     List<Object> keys = [];