Releasing v5.5.7

- Minor speed optimizations

Author: ENikS

package.props

@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <Version>5.5.6</Version>
+    <Version>5.5.7</Version>
     <PackageReleaseNotes>This package is distributed as .NET Standard 1.0, .NET 4.0, 4.5, 4.7 package.</PackageReleaseNotes>
   </PropertyGroup>
 

src/Container/PolicyList.cs

@@ -77,7 +77,7 @@ public IBuilderPolicy Get(Type type, string name, Type policyInterface, out IPol
         {
             list = null;
 
-            if (_policies.TryGetValue(new PolicyKey(type, name, policyInterface), out var policy))
+            if (0 < _policies.Count && _policies.TryGetValue(new PolicyKey(type, name, policyInterface), out var policy))
             {
                 list = this;
                 return policy;