Commitf32731f902fixed a potential panic when an error was returned while trying to get existing credentials. However, other code paths currently use the result of `GetDefaultAuthConfig()` even in an error condition; this resulted in a panic, because a `nil` was returned. Signed-off-by: Sebastiaan van Stijn <github@gone.nl> (cherry picked from commitc2820a7e3b) Signed-off-by: Sebastiaan van Stijn <github@gone.nl>