1) Add type cast for better coding style.

2) replace StrCpy() usage in Variable driver with StrnCpy().

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>


git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15770 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Dxe/Event/Event.c

@@ -204,7 +204,7 @@ CoreDispatchEventNotifies (
     CoreAcquireEventLock ();
   }
 
-  gEventPending &= ~(1 << Priority);
+  gEventPending &= ~(UINTN)(1 << Priority);
   CoreReleaseEventLock ();
 }