EdgeCommand: fix parsing when unsetting commands #360
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When using `EdgeCommand Top` or `EdgeCommand`, fvwm3 would crash because of a double-free. Fix the parsing to use a default empty string for commands which aren't required, to avoid segfaulting.
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When using
EdgeCommand ToporEdgeCommand, fvwm3 would crash becauseof a double-free. Fix the parsing to use a default empty string for
commands which aren't required, to avoid segfaulting.