Fix pedantic warnings:
> ../include/os.h:144:71: warning: ISO C does not allow extra ‘;’ outside of a function [-Wpedantic]
> 144 | XNFalloc(unsigned long /*amount */ ) __attribute__((returns_nonnull));;
> ../include/os.h:158:76: warning: ISO C does not allow extra ‘;’ outside of a function [-Wpedantic]
> 158 | XNFcallocarray(size_t nmemb, size_t size) __attribute__((returns_nonnull));;
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>