Don't disable early binding during preloading script

We should only disable early binding during the opcache_compile_file()
calls, not inside the preloading script or anything it includes.
The right condition to check for is whether we compile the file
without execution, as declaring classes is "execution".

Zend/zend_compile.c

@@ -7385,7 +7385,7 @@ void zend_compile_class_decl(znode *result, zend_ast *ast, zend_bool toplevel) /
 	if (toplevel
 		/* We currently don't early-bind classes that implement interfaces or use traits */
 	 && !ce->num_interfaces && !ce->num_traits
-	 && !(CG(compiler_options) & ZEND_COMPILE_PRELOAD)) {
+	 && !(CG(compiler_options) & ZEND_COMPILE_WITHOUT_EXECUTION)) {
 		if (extends_ast) {
 			zend_class_entry *parent_ce = zend_lookup_class_ex(
 				ce->parent_name, NULL, ZEND_FETCH_CLASS_NO_AUTOLOAD);

ext/opcache/tests/preload_early_binding.inc

@@ -0,0 +1,3 @@
+<?php
+var_dump(new X);
+class X {}

ext/opcache/tests/preload_early_binding.phpt

@@ -0,0 +1,18 @@
+--TEST--
+Early binding should work fine inside the preload script
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.optimization_level=-1
+opcache.preload={PWD}/preload_early_binding.inc
+--SKIPIF--
+<?php
+require_once('skipif.inc');
+if (PHP_OS_FAMILY == 'Windows') die('skip Preloading is not supported on Windows');
+?>
+--FILE--
+OK
+--EXPECT--
+object(X)#1 (0) {
+}
+OK