Fix FPC x64 build: avoid invalid dword immediate in CRCFoldLsb32 SSE2 asm

FPC's x64 assembler rejects `and rax, $FFFFFFFF` (8011: signed dword out of
range). Use `mov eax, ebx` to zero-extend the 32-bit CRC into RAX for the
UInt64 return value.

Author: Xor-el

HashLib/src/Include/Simd/CRC/CRCFoldLsb32Sse2.inc

@@ -125,8 +125,7 @@
 
 @L32Sse2_done:
   mov dword ptr [r8], ebx
-  mov rax, rbx
-  and rax, $FFFFFFFF
+  mov eax, ebx
 
   pop r15
   pop r14