fix: function bind lead to stack leak

package.json

@@ -1,6 +1,6 @@
 {
     "name": "wasmoon-lua5.1",
-    "version": "1.18.9",
+    "version": "1.18.10",
     "description": "A real lua 5.1 VM with JS bindings made with webassembly",
     "main": "dist/index.js",
     "scripts": {

src/thread.ts

@@ -250,6 +250,7 @@ export default class LuaThread {
                 return undefined;
             } finally {
                 thread.close();
+                this.pop();
             }
         };
         func.$isAlive = () => true;
@@ -259,7 +260,6 @@ export default class LuaThread {
             func.$isAlive = () => false;
         };
         this.luaApi.pointerRefs.set(pointer, func);
-
         return func;
     }
 

test/debug.mjs

@@ -4,16 +4,26 @@ import { Lua } from '../dist/index.js';
 const lua = await Lua.create();
 
 await lua.doString(`
-function Apply() 
-    function Apply() 
-        print(123)
-    end
-end
-`);
+    x = function ()
+    print(1)
+ return 1
+ end
+ z = function ()
+    print(1)
+ return 1
+ end
+ `);
 
-console.log(lua.global.getGlobalPointer('Apply'));
-await lua.doString(`Apply()`);
-console.log(lua.global.getGlobalPointer('Apply'));
-await lua.doString(`Apply()`);
-console.log(lua.global.getGlobalPointer('Apply'));
-await lua.doString(`Apply()`);
+const x = lua.ctx.x;
+const y = lua.ctx.z;
+console.log(x === y);
+lua.global.dumpStack();
+console.log('===========');
+console.log(x());
+lua.global.dumpStack();
+console.log('===========');
+console.log(x());
+lua.global.dumpStack();
+console.log('===========');
+console.log(x());
+lua.global.dumpStack();