Fix regression where msfconsole.rc wasn't loading

Noticed by @kernelsmith and mentioned in IRC.

#### Verification
 - [x] if you don't have an existing msfconsole.rc, `echo 'version' > ~/.msf4/msfconsole.rc`
 - [x] start msfconsole
 - [x] **VERIFY** you see output from `version` command