1. When get value from AltCfg data, check the varstore type first.

2. Check the pointer's validation before using it.

Signed-off-by:ydong10
Reviewed-by:lgao4


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11816 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/SetupBrowserDxe/IfrParse.c

@@ -457,6 +457,7 @@ InitializeRequestElement (
 
   if (!Find) {
     ConfigInfo = AllocateZeroPool(sizeof (FORM_BROWSER_CONFIG_REQUEST));
+    ASSERT (ConfigInfo != NULL);
     ConfigInfo->Signature     = FORM_BROWSER_CONFIG_REQUEST_SIGNATURE;
     ConfigInfo->ConfigRequest = AllocateCopyPool (StrSize (Storage->ConfigHdr), Storage->ConfigHdr);
     ConfigInfo->SpareStrLen   = 0;