This patch corrects the `using`-declaration in `libc/shared/sign.h`. The previous change (#150083) incorrectly used the `LIBC_NAMESPACE_DECL` macro. This is corrected to use `LIBC_NAMESPACE`.
This patch corrects the `using`-declaration in `libc/shared/sign.h`. The previous change (#150083) incorrectly used the `LIBC_NAMESPACE_DECL` macro. This is corrected to use `LIBC_NAMESPACE`.