Possibly its not his code. For a good time go to github and look for blowfish implementations in C and try to figure out which are original and which are cut and paste of Schneier. Schneier of course offers a blowfish written by him in C with no license or patent so if its cut and pasted into a licensed larger project you got problems. Or you can reimplement and put your reimplementation under your own choice of license, possibly not as well as Schneier.

Another good reason for no license is a very nice and polite "go away". This is just to show I use social media to get a checkmark on some hiring list and get a job and has no purpose beyond that.