Fix nil map case.
Fix nil map case.

Oops: obviously setting the default arugment is not going to help when nil is
explicitly passed as a parameter.

dealpath/bluepill,bluepill-rb/bluepill,sferik/bluepill,bluepill-rb/bluepill,sferik/bluepill,fgbreel/bluepill,iroller/bluepill,fgbreel/bluepill,d-unseductable/bluepill,iroller/bluepill,d-unseductable/bluepill,dealpath/bluepill