Revert double free detection

Author: kateinoigakukun

Runtime/src/object-heap.ts

@@ -4,7 +4,6 @@ import { ref } from "./types.js";
 type SwiftRuntimeHeapEntry = {
     id: number;
     rc: number;
-    released: boolean;
 };
 export class SwiftRuntimeHeap {
     private _heapValueById: Map<number, any>;
@@ -16,11 +15,7 @@ export class SwiftRuntimeHeap {
         this._heapValueById.set(0, globalVariable);
 
         this._heapEntryByValue = new Map();
-        this._heapEntryByValue.set(globalVariable, {
-            id: 0,
-            rc: 1,
-            released: false,
-        });
+        this._heapEntryByValue.set(globalVariable, { id: 0, rc: 1 });
 
         // Note: 0 is preserved for global
         this._heapNextKey = 1;
@@ -34,22 +29,13 @@ export class SwiftRuntimeHeap {
         }
         const id = this._heapNextKey++;
         this._heapValueById.set(id, value);
-        this._heapEntryByValue.set(value, { id: id, rc: 1, released: false });
+        this._heapEntryByValue.set(value, { id: id, rc: 1 });
         return id;
     }
 
     release(ref: ref) {
         const value = this._heapValueById.get(ref);
         const entry = this._heapEntryByValue.get(value)!;
-        if (entry.released) {
-            console.error(
-                "Double release detected for reference " + ref,
-                entry
-            );
-            throw new ReferenceError(
-                "Double release detected for reference " + ref
-            );
-        }
         entry.rc--;
         if (entry.rc != 0) return;