chg: dev: use only c23 or c11 noreturn specifiers
Use [[noreturn]]
when compiling with C23 or greater.
The attribute macro name has been capitalized as NORETURN
as defining it as noreturn
breaks external headers.
#define noreturn __attribute__((noreturn))
wasn't used as C11's stdnoreturn.h
/_Noreturn
is required to build BIND9 in the first place.
Edited by Aydın Mercan