a5a0d88073
This newline was originally added in https://reviews.llvm.org/D142184 but I think updating `__libcpp_verbose_abort` to add newline instead is more consistent, and works for other callers of `_LIBCPP_VERBOSE_ABORT`. The `_LIBCPP_ASSERTION_HANDLER` calls through to either `_LIBCPP_VERBOSE_ABORT` macro or the `__builtin_verbose_trap`. From what I can tell neither of these function expect a trailing newline (at least none of the usage of `_LIBCPP_VERBOSE_ABORT` or `__builtin_verbose_trap` that I can find include a trailing newline except `_LIBCPP_ASSERTION_HANDLER`). I noticed this discrepancy when working on https://github.com/emscripten-core/emscripten/pull/24543