From: Anatol Belski <ab@php.net>
Date: Mon, 29 Feb 2016 14:26:57 +0000 (+0100)
Subject: add NULL check
X-Git-Tag: php-5.6.20RC1~28
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a310c3b484051424c4545a00b731b78a4fff7982;p=php

add NULL check
---

diff --git a/ext/pdo_dblib/dblib_stmt.c b/ext/pdo_dblib/dblib_stmt.c
index 2e3e881943..387648244f 100644
--- a/ext/pdo_dblib/dblib_stmt.c
+++ b/ext/pdo_dblib/dblib_stmt.c
@@ -103,8 +103,10 @@ static int pdo_dblib_stmt_cursor_closer(pdo_stmt_t *stmt TSRMLS_DC)
 	/* Cancel any pending results */
 	dbcancel(H->link);
 	
-	efree(stmt->columns); 
-	stmt->columns = NULL;
+	if (stmt->columns) {
+		efree(stmt->columns); 
+		stmt->columns = NULL;
+	}
 	
 	return 1;
 }