SERVER-77600 added the ability to set and toggle auto-encryption on an existing Mongo connection. This added new functions to the Mongo object namely: set/unsetAutoEncryption(), toggleAutoEncryption(), isAutoEncryptionEnabled(), and getAutoEncryptionOptions().  If these functions are called after the connection was closed, it results in a segmentation fault, since these functions do not check the private data shared pointer before dereferencing it.  The proper behavior is to throw an exception.