Use correct defines

KorneiDontsov · KorneiDontsov · commit 205377f0ece6 · 2023-01-18T19:20:31.000+03:00
To ensure that new API levels that will appear in Unity in future will not break the code.
diff --git a/Unity3D/ConcurrentDictionary.cs b/Unity3D/ConcurrentDictionary.cs
@@ -1,4 +1,4 @@
-#if !NET_4_6 && !NET_STANDARD_2_0 && !NET_STANDARD_2_1
+#if !UNITY_5_6_OR_NEWER || NET_2_0 || NET_2_0_SUBSET
 using System;
 using System.Collections;
 using System.Collections.Generic;

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-#if !NET_4_6 && !NET_STANDARD_2_0 && !NET_STANDARD_2_1`
	`1`	`+#if !UNITY_5_6_OR_NEWER \|\| NET_2_0 \|\| NET_2_0_SUBSET`
`2`	`2`	`using System;`
`3`	`3`	`using System.Collections;`
`4`	`4`	`using System.Collections.Generic;`