null pointer fix

- need to nil check before pulling value

cmd/server/server.go

@@ -8,6 +8,8 @@ import (
 )
 
 const (
+	//sqlite doesn't have an error type for this error, but we want to catch when this error is thrown
+	//and provide the proper response. It should not be treated as an error if the db isn't setup.
 	ErrInit    = "sqlite3: SQL logic error: no such table: servers"
 	ErrInitRsp = "The 'init' command must be run before mctl can be used"
 )