I am not sure how it's done with cosmopolitan libc, but on MSVC++, when compiled with a hotpatching, every function had a `mov edi, edi` instruction at the star

I am not sure how it's done with cosmopolitan libc, but on MSVC++, when compiled with a hotpatching, every function had a `mov edi, edi` instruction at the start, so that there were a few useless bytes that could be safely removed. Avoid the need for a trampoline.