fix(aot): skip comment-only else branch

src/Php/CompilerBase.php

@@ -4203,7 +4203,7 @@ class CompilerBase extends \PhpAot\Core\Translator implements PropertyAccessCont
     protected function parseIfChain(array $arms, ?Node\Stmt\Else_ $else, int $index): string
     {
         if (!isset($arms[$index])) {
-            if (!$else || (count($else->stmts) == 1 && $else->stmts[0] instanceof Node\Stmt\Nop)) {
+            if (!$else || $this->isEmptyStmtList($else->stmts)) {
                 return '';
             }
             return $this->parseBlockStmts($else->stmts);
@@ -4221,6 +4221,16 @@ class CompilerBase extends \PhpAot\Core\Translator implements PropertyAccessCont
         return $code;
     }
 
+    protected function isEmptyStmtList(array $stmts): bool
+    {
+        foreach ($stmts as $stmt) {
+            if (!$stmt instanceof Node\Stmt\Nop) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     /**
      * 逻辑比较的运算，必须返回 bool 类型.
      */

tests/aot/control_flow/empty-else.phpt

@@ -1,5 +1,5 @@
 --TEST--
-empty else
+empty else with comments
 --FILE--
 <?php
 function main() {