fix list not working when exec is set but not executing

phpdbg_list.c

@@ -33,7 +33,7 @@ ZEND_EXTERN_MODULE_GLOBALS(phpdbg);
 
 PHPDBG_LIST(lines) /* {{{ */
 {
-	if (!PHPDBG_G(exec) || !zend_is_executing(TSRMLS_C)) {
+	if (!PHPDBG_G(exec) && !zend_is_executing(TSRMLS_C)) {
 		phpdbg_error("Not executing, and execution context not set");
 		return SUCCESS;
 	}

test.php

@@ -1,4 +1,6 @@
 <?php
+include 'web-bootstrap.php'; 
+
 class phpdbg {
     public function isGreat($greeting = null) {
         printf(