Fix Win64. It still cares about the actual registers behind scratch1/scratch2

src/x64/stub-cache-x64.cc

Index: src/x64/stub-cache-x64.cc
diff --git a/src/x64/stub-cache-x64.cc b/src/x64/stub-cache-x64.cc
index 5ab1347ad0ff52e71aaffbf1ad8a29deb5f5f1e8..78998fa3b0225ecbff6e0e9d7eaf32d08fbed2ed 100644
--- a/src/x64/stub-cache-x64.cc
+++ b/src/x64/stub-cache-x64.cc
@@ -2839,7 +2839,7 @@ Handle<Code> LoadStubCompiler::CompileLoadNonexistent(
 
 Register* LoadStubCompiler::registers() {
   // receiver, name, scratch1, scratch2, scratch3, scratch4.
-  static Register registers[] = { rax, rcx, rbx, rdx, rdi, r8 };
+  static Register registers[] = { rax, rcx, rdx, rbx, rdi, r8 };
   return registers;
 }