[Bug c/119311] musttail attribute is lost sometimes as single statement for then part of an if statement

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119311

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 60789
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60789&action=edit
gcc15-pr119311.patch

Untested fix.