Add check for NULL pointer.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7344 6f19259b-4bc3-4df7-8a09-765794883524

diff --git a/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c b/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
index 48972ae0a6367831d5ddf067517472ca36c05b12..e5a5599f58181334dc9d612192447acb2fde36e1 100644 (file)
--- a/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
+++ b/MdeModulePkg/Bus/Usb/UsbKbDxe/KeyBoard.c
@@ -1196,6 +1196,7 @@ KeyboardHandler (
     RemoveKeyCode (&(UsbKeyboardDevice->KeyboardBuffer), &UsbKey);\r
 \r
     KeyDescriptor = GetKeyDescriptor (UsbKeyboardDevice, UsbKey.KeyCode);\r
+    ASSERT (KeyDescriptor != NULL);\r
 \r
     switch (KeyDescriptor->Modifier) {\r
 \r