fix(compiler): 修复返回语句缺少分号及未定义变量错误提示问题

- 修复了编译器中return语句缺少分号的问题
- 修正了未定义变量错误提示中的变量名显示格式
- 统一使用errorUndefinedVariable方法处理闭包中未定义变量的情况
- 添加了对closure_011和closure_013测试用例的支持

src/Php/CompilerBase.php

@@ -1269,9 +1269,9 @@ class CompilerBase extends \PhpAot\Core\Translator
             // 必须提前声明变量，否则在末尾声明并 return 可能会被 gcc 优化掉
             $this->addLocalVar($tmpVar, $type);
             $code = $tmpVar . ' = ' . $exprCode . ';' . PHP_EOL;
-            $code .= $this->getIndent() . 'return ' . $tmpVar;
+            $code .= $this->getIndent() . 'return ' . $tmpVar . ';';
         } else {
-            $code = 'return ' . $exprCode;
+            $code = 'return ' . $exprCode . ';';
         }
 
         return $code;
@@ -1741,7 +1741,7 @@ class CompilerBase extends \PhpAot\Core\Translator
 
     protected function errorUndefinedVariable(Variable $node): never
     {
-        $this->fatalError($node, "The variable `{$node->name}` is undefined");
+        $this->fatalError($node, "The variable `\${$node->name}` is undefined");
     }
 
     protected function dump(NodeAbstract $v): void
@@ -3570,7 +3570,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         foreach ($expr->uses as $useItem) {
             $var = $this->parseIdentifier($useItem->var);
             if ($this->isVarExpr($useItem->var) and !$this->hasVar($var)) {
-                $this->fatalError($expr, 'Variable `' . $var . '` is not defined');
+                $this->errorUndefinedVariable($useItem->var);
             }
             if ($useItem->byRef) {
                 $useVars [] = $this->convertToRef($useItem->var);

tests/zend/closures/closure_011.phpt

@@ -0,0 +1,14 @@
+--TEST--
+Closure 011: Lexical copies not static in closure
+--FILE--
+<?php
+$i = 1;
+$lambda = function () use ($i) {
+    return ++$i;
+};
+$lambda();
+echo $lambda()."\n";
+//early prototypes gave 3 here because $i was static in $lambda
+?>
+--EXPECT--
+2

tests/zend/closures/closure_013.phpt

@@ -0,0 +1,28 @@
+--TEST--
+Closure 013: __invoke() on temporary result
+--FILE--
+<?php
+class Foo {
+    function __invoke() {
+        echo "Hello World!\n";
+    }
+}
+
+function foo() {
+    return function() {
+        echo "Hello World!\n";
+    };
+}
+
+function main() {
+    $test = new Foo;
+    $test->__invoke();
+    $test = foo();
+    $test->__invoke();
+    $test = foo()->__invoke();
+}
+?>
+--EXPECT--
+Hello World!
+Hello World!
+Hello World!