Fix crash on multi-component bodies. #852
Fix crash on multi-component bodies. #852

Patterns with multiple components may fail to ground one of
the parts; this is normal and is handled up-stream.

AmeBel/atomspace,ArvinPan/atomspace,ArvinPan/atomspace,AmeBel/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,inflector/atomspace,rTreutlein/atomspace,yantrabuddhi/atomspace,inflector/atomspace,yantrabuddhi/atomspace,rTreutlein/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,inflector/atomspace,AmeBel/atomspace,AmeBel/atomspace,rTreutlein/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,ArvinPan/atomspace,misgeatgit/atomspace,yantrabuddhi/atomspace,rTreutlein/atomspace,inflector/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,inflector/atomspace,AmeBel/atomspace