[Bug other/82784] Remove semicolon after "do {} while (0)" macros

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82784

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
So the way it's used is correct ... but why bother with the do {...} while(0)
in that case? It could just use {...} instead.