BootManagerLib: Check the pointer to avoid use NULL pointer.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19301 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Library/BootManagerLib/BootManager.c b/MdeModulePkg/Library/BootManagerLib/BootManager.c
index cfeedebc88084c2b1472c30039e1382a09090f53..dd87250743ce8cccb80151337b3012e86f46eb81 100644 (file)
--- a/MdeModulePkg/Library/BootManagerLib/BootManager.c
+++ b/MdeModulePkg/Library/BootManagerLib/BootManager.c
@@ -327,6 +327,9 @@ GroupMultipleLegacyBootOption4SameType (
   SetMem (DeviceTypeIndex, sizeof (DeviceTypeIndex), 0xff);\r
 \r
   GetEfiGlobalVariable2 (L"BootOrder", (VOID **) &BootOrder, &BootOrderSize);\r
+  if (BootOrder == NULL) {\r
+    return;\r
+  }\r
 \r
   for (Index = 0; Index < BootOrderSize / sizeof (UINT16); Index++) {\r
     UnicodeSPrint (OptionName, sizeof (OptionName), L"Boot%04x", BootOrder[Index]);\r