Fix Struct decoding for null (#4112)

* Fix Struct decoding for null

* CHANGELOG

* 6.5.2

packages/typegen/package.json

@@ -10,7 +10,6 @@
   "license": "Apache-2.0",
   "maintainers": [],
   "name": "@polkadot/typegen",
-  "private": false,
   "repository": {
     "directory": "packages/typegen",
     "type": "git",
@@ -21,7 +20,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "6.5.2-3",
+  "version": "6.5.2",
   "main": "index.js",
   "bin": {
     "polkadot-types-chain-info": "./scripts/polkadot-types-chain-info.cjs",
@@ -34,10 +33,10 @@
     "@babel/core": "^7.15.8",
     "@babel/register": "^7.15.3",
     "@babel/runtime": "^7.15.4",
-    "@polkadot/api": "6.5.2-3",
-    "@polkadot/rpc-provider": "6.5.2-3",
-    "@polkadot/types": "6.5.2-3",
-    "@polkadot/types-support": "6.5.2-3",
+    "@polkadot/api": "6.5.2",
+    "@polkadot/rpc-provider": "6.5.2",
+    "@polkadot/types": "6.5.2",
+    "@polkadot/types-support": "6.5.2",
     "@polkadot/util": "^7.6.1",
     "handlebars": "^4.7.7",
     "websocket": "^1.0.34",
@@ -47,4 +46,4 @@
     "@types/websocket": "^1.0.4",
     "@types/yargs": "^17.0.4"
   }
-}
+}