From 44890dbde6b2a70348787d81885012583ed4a5dd Mon Sep 17 00:00:00 2001
From: ydong10 <ydong10@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 10 Sep 2012 09:35:43 +0000
Subject: Refine code to make it more safely.

Signed-off-by: Eric Dong <eric.dong@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13712 6f19259b-4bc3-4df7-8a09-765794883524
---
 ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ShellPkg')

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
index c85091d0a4..8aafcced24 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/DmpStore.c
@@ -59,7 +59,7 @@ GetAttrType (
     RetString = StrnCatGrow(&RetString, &BufLen, L"Invalid", 0);
   }
 
-  if (RetString[0] == L'+') {
+  if ((RetString != NULL) && (RetString[0] == L'+')) {
     CopyMem(RetString, RetString + 1, StrSize(RetString + 1));
   }
 
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