nimble/controller: Fix memory leaks when creating connection
nimble/controller: Fix memory leaks when creating connection

This patch makes sure to release aux data if something goes wrong.

X-Original-Commit: 9012fcdb5323e488758ac5914c75d9f4016f7903

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble