Fix compiler warning
Fix compiler warning

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