Fix a segfault in wimenu when doing a history dump
Fix a segfault in wimenu when doing a history dump

bwhmather/wmii,sunaku/wmii,0intro/wmii,bwhmather/wmii,sunaku/wmii,bwhmather/wmii,bwhmather/wmii,sunaku/wmii,bwhmather/wmii,0intro/wmii,0intro/wmii,sunaku/wmii,sunaku/wmii,0intro/wmii