_rip_relative has to use x64 registers for the proper rip relative adressing

That's actually an embarassing error...

test_cases/simple_tests.asm

@@ -11,7 +11,7 @@ _small:
 
 public _rip_relative
 _rip_relative:
-	mov eax, [seed]
+	mov rax, qword[seed]
 	mov ecx, 214013
 	mul ecx
 	add eax, 2531011