From d9ba76b489ea26de8551d32651c726ad992377b5 Mon Sep 17 00:00:00 2001
From: Fu Siyuan <siyuan.fu@intel.com>
Date: Fri, 1 Apr 2016 13:14:49 +0800
Subject: [PATCH] NetworkPkg: Check pointer for NULL before use.

Cc: Ye Ting <ting.ye@intel.com>
Cc: Wu Jiaxin <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
---
 NetworkPkg/HttpBootDxe/HttpBootConfig.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/NetworkPkg/HttpBootDxe/HttpBootConfig.c b/NetworkPkg/HttpBootDxe/HttpBootConfig.c
index e7dd5db4db..c47dddcee8 100644
--- a/NetworkPkg/HttpBootDxe/HttpBootConfig.c
+++ b/NetworkPkg/HttpBootDxe/HttpBootConfig.c
@@ -554,6 +554,10 @@ HttpBootFormCallback (
     // Get user input URI string
     //
     Uri = HiiGetString (CallbackInfo->RegisteredHandle, Value->string, NULL);
+    ASSERT (Uri != NULL);
+    if (Uri == NULL) {
+      return EFI_UNSUPPORTED;
+    }
 
     //
     // Convert the scheme to all lower case.