Remove Size==0 branch in SmmAllocatePool()

The background is :

The SmmMemoryAllocationLib of one of the instance of MemoryAllocation library class. As in MdePkg comment for AllocatePool() : “If AllocationSize is 0, then a valid buffer of 0 size is returned.”,the SMM library implements AllocatePool by SMST service SmmAllocatePool which does NOT support the zero size.




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10171 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/PiSmmCore/Pool.c

@@ -224,11 +224,6 @@ SmmAllocatePool (
     return EFI_INVALID_PARAMETER;
   }
 
-  if (Size == 0) {
-    *Buffer = NULL;
-    return EFI_SUCCESS;
-  }
-
   Size += sizeof (*PoolHdr);
   if (Size > MAX_POOL_SIZE) {
     Size = EFI_SIZE_TO_PAGES (Size);