For each symbol in a /delayloaded library, lld injects a small piece of code to handle the symbol lazy loading. This code doesn't have unwind information, which may be troublesome. Provide these information for AMD64. Thanks to Yannis Juglaret <yjuglaret@mozilla.com> for contributing the unwinding info and for his support while crafting this patch. Fix #59639 Differential Revision: https://reviews.llvm.org/D141691