Restore Xmm registers properly in StgCRun.c
This fixes #16514 (closed): Xmm6-15 was restored based off rax instead of rsp.
The code was introduced in the fix for #14619 (closed).
This fixes #16514 (closed): Xmm6-15 was restored based off rax instead of rsp.
The code was introduced in the fix for #14619 (closed).