Refine some code to make code run safely.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10873 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/GetPowerOfTwo64.c

@@ -45,5 +45,5 @@ GetPowerOfTwo64 (
     return 0;
   }
 
-  return LShiftU64 (1, HighBitSet64 (Operand));
+  return LShiftU64 (1, (UINTN) HighBitSet64 (Operand));
 }

EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BasePrintLib/PrintLib.c

@@ -424,7 +424,7 @@ BasePrintLibVSPrint (
             ArgumentString = StatusString [Index + WARNING_STATUS_NUMBER];
           }
         } else {
-          Index = Status;
+          Index = (UINTN) Status;
           if (Index <= WARNING_STATUS_NUMBER) {
             ArgumentString = StatusString [Index];
           }