CleverRaven/Cataclysm-DDA — pull request #6316 by frycarson (2014-02-26 01:34:12+00:00)
Title: Conductivity fix - Issue #6190

Fixes issues 6190; added extra check to make sure that the second material is not "null" using a string compare. I don't know if there is a better way to identify "null" material without doing a string compare.