Add error handling code to prevent variable store corruption in release build.

Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting  <ting.ye@intel.com>
Reviewed-by: Dong Guo <guo.dong@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14139 6f19259b-4bc3-4df7-8a09-765794883524

SecurityPkg/VariableAuthenticated/RuntimeDxe/AuthService.c

@@ -445,6 +445,10 @@ AddPubKeyInStore (
              FALSE
              );
   ASSERT_EFI_ERROR (Status);
+  if (EFI_ERROR (Status)) {
+    return 0;
+  }
+
   //
   // Check whether the public key entry does exist.
   //
@@ -492,6 +496,9 @@ AddPubKeyInStore (
                  FALSE
                  );
       ASSERT_EFI_ERROR (Status);
+      if (EFI_ERROR (Status)) {
+        return 0;
+      }
 
       DataSize  = DataSizeOfVariable (Variable.CurrPtr);
       Data      = GetVariableDataPtr (Variable.CurrPtr);