Minor update for PlatOverMngr driver, VariableFormat.h and DxePcdLib.c.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6114 6f19259b-4bc3-4df7-8a09-765794883524

MdePkg/Library/DxePcdLib/DxePcdLib.c

@@ -514,7 +514,7 @@ LibPcdSet64 (
   maximum size supported by TokenNumber and return NULL to 
   indicate that the set operation was not actually performed. 
   
-  If SizeOfValue > 0 and Buffer is NULL, then ASSERT().
+  If SizeOfBuffer > 0 and Buffer is NULL, then ASSERT().
   
   @param[in]      TokenNumber   The PCD token number to set a current value for.
   @param[in, out] SizeOfBuffer  The size, in bytes, of Buffer.