Fix memory leak

This fixes oss-fuzz #47791

Author: dstogov

ext/reflection/php_reflection.c

@@ -4187,17 +4187,19 @@ ZEND_METHOD(ReflectionClass, getMethod)
 /* }}} */
 
 /* {{{ _addmethod */
-static void _addmethod(zend_function *mptr, zend_class_entry *ce, zval *retval, zend_long filter)
+static zend_bool _addmethod(zend_function *mptr, zend_class_entry *ce, zval *retval, zend_long filter)
 {
 	if ((mptr->common.fn_flags & ZEND_ACC_PRIVATE) && mptr->common.scope != ce) {
-		return;
+		return 0;
 	}
 
 	if (mptr->common.fn_flags & filter) {
 		zval method;
 		reflection_method_factory(ce, mptr, NULL, &method);
 		add_next_index_zval(retval, &method);
+		return 1;
 	}
+	return 0;
 }
 /* }}} */
 
@@ -4237,7 +4239,9 @@ ZEND_METHOD(ReflectionClass, getMethods)
 		}
 		zend_function *closure = zend_get_closure_invoke_method(obj);
 		if (closure) {
-			_addmethod(closure, ce, return_value, filter);
+			if (!_addmethod(closure, ce, return_value, filter)) {
+				_free_function(closure);
+			}
 		}
 		if (!has_obj) {
 			zval_ptr_dtor(&obj_tmp);

ext/reflection/tests/ReflectionClass_getMethods_004.phpt

@@ -0,0 +1,11 @@
+--TEST--
+ReflectionClass::getMethods()
+--FILE--
+<?php
+$l = function() {};
+$o=new ReflectionObject($l);
+$o->getMethods(2);
+?>
+DONE
+--EXPECT--
+DONE