"Free" a rustls_client_config previously returned from
rustls_client_config_builder_build. Since rustls_client_config is actually an
atomically reference-counted pointer, extant client connections may still
hold an internal reference to the Rust object. However, C code must
consider this pointer unusable after "free"ing it.
Calling with NULL is fine. Must not be called twice with the same value.
"Free" a rustls_client_config previously returned from rustls_client_config_builder_build. Since rustls_client_config is actually an atomically reference-counted pointer, extant client connections may still hold an internal reference to the Rust object. However, C code must consider this pointer unusable after "free"ing it. Calling with NULL is fine. Must not be called twice with the same value.