Fix for nuke.scriptClear() crashing Nuke#23

j0yu wants to merge 2 commits intoshotgunsoftware:mastershotgunsoftware/tk-multi-snapshot:masterfrom

wwfxuk:fix-nuke-crash-on-scriptClearwwfxuk/tk-multi-snapshot:fix-nuke-crash-on-scriptClearCopy head branch name to clipboard