Catch error caused by atoms that become invalid after (cog-af) returns
Catch error caused by atoms that become invalid after (cog-af) returns

Handles become invalid if they are delted from the atomspace or they
are StateLinks and the values changes.

AmeBel/opencog,AmeBel/opencog,andre-senna/opencog,AmeBel/opencog,andre-senna/opencog,andre-senna/opencog,andre-senna/opencog,AmeBel/opencog,andre-senna/opencog,andre-senna/opencog,andre-senna/opencog,AmeBel/opencog,AmeBel/opencog,AmeBel/opencog