fix compiler warning
fix compiler warning

andre-senna/opencog,williampma/opencog,Tiggels/opencog,printedheart/opencog,MarcosPividori/atomspace,rTreutlein/atomspace,ruiting/opencog,sanuj/opencog,misgeatgit/opencog,ceefour/opencog,yantrabuddhi/atomspace,eddiemonroe/atomspace,Selameab/opencog,Selameab/atomspace,MarcosPividori/atomspace,eddiemonroe/opencog,kinoc/opencog,yantrabuddhi/opencog,inflector/opencog,iAMr00t/opencog,ceefour/opencog,ruiting/opencog,printedheart/atomspace,eddiemonroe/atomspace,jlegendary/opencog,andre-senna/opencog,printedheart/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,yantrabuddhi/atomspace,sumitsourabh/opencog,ceefour/atomspace,prateeksaxena2809/opencog,anitzkin/opencog,jlegendary/opencog,inflector/opencog,sumitsourabh/opencog,cosmoharrigan/atomspace,williampma/opencog,Allend575/opencog,zhaozengguang/opencog,zhaozengguang/opencog,AmeBel/atomspace,prateeksaxena2809/opencog,iAMr00t/opencog,yantrabuddhi/opencog,andre-senna/opencog,Selameab/atomspace,gavrieltal/opencog,rTreutlein/atomspace,prateeksaxena2809/opencog,inflector/atomspace,Tiggels/opencog,sanuj/opencog,tim777z/opencog,prateeksaxena2809/opencog,rohit12/opencog,rTreutlein/atomspace,virneo/opencog,AmeBel/atomspace,rohit12/opencog,printedheart/opencog,Selameab/atomspace,shujingke/opencog,AmeBel/opencog,virneo/opencog,kinoc/opencog,tim777z/opencog,inflector/atomspace,tim777z/opencog,rodsol/opencog,gaapt/opencog,jswiergo/atomspace,roselleebarle04/opencog,gaapt/opencog,iAMr00t/opencog,inflector/opencog,eddiemonroe/opencog,eddiemonroe/opencog,ceefour/atomspace,AmeBel/opencog,jlegendary/opencog,gaapt/opencog,cosmoharrigan/opencog,sumitsourabh/opencog,AmeBel/opencog,gavrieltal/opencog,kim135797531/opencog,williampma/opencog,rodsol/opencog,eddiemonroe/atomspace,kim135797531/opencog,kinoc/opencog,misgeatgit/opencog,cosmoharrigan/atomspace,rTreutlein/atomspace,gavrieltal/opencog,AmeBel/opencog,cosmoharrigan/opencog,virneo/opencog,ArvinPan/opencog,yantrabuddhi/opencog,roselleebarle04/opencog,misgeatgit/opencog,Tiggels/opencog,ceefour/opencog,virneo/atomspace,misgeatgit/opencog,gaapt/opencog,misgeatgit/atomspace,UIKit0/atomspace,rohit12/opencog,prateeksaxena2809/opencog,inflector/atomspace,shujingke/opencog,zhaozengguang/opencog,tim777z/opencog,inflector/atomspace,gaapt/opencog,printedheart/opencog,roselleebarle04/opencog,yantrabuddhi/opencog,roselleebarle04/opencog,rodsol/opencog,AmeBel/atomspace,anitzkin/opencog,misgeatgit/opencog,kinoc/opencog,rohit12/atomspace,Allend575/opencog,AmeBel/opencog,ArvinPan/opencog,shujingke/opencog,AmeBel/atomspace,ArvinPan/atomspace,andre-senna/opencog,andre-senna/opencog,printedheart/opencog,rodsol/opencog,shujingke/opencog,ruiting/opencog,misgeatgit/atomspace,yantrabuddhi/atomspace,kinoc/opencog,misgeatgit/opencog,ruiting/opencog,virneo/opencog,virneo/opencog,sumitsourabh/opencog,AmeBel/opencog,williampma/atomspace,jlegendary/opencog,printedheart/atomspace,williampma/opencog,TheNameIsNigel/opencog,shujingke/opencog,misgeatgit/opencog,misgeatgit/opencog,Allend575/opencog,rTreutlein/atomspace,TheNameIsNigel/opencog,rohit12/atomspace,rohit12/opencog,anitzkin/opencog,rohit12/opencog,TheNameIsNigel/opencog,ArvinPan/opencog,zhaozengguang/opencog,gaapt/opencog,rodsol/atomspace,kim135797531/opencog,anitzkin/opencog,MarcosPividori/atomspace,williampma/atomspace,eddiemonroe/opencog,gavrieltal/opencog,Selameab/opencog,prateeksaxena2809/opencog,virneo/opencog,ArvinPan/opencog,Tiggels/opencog,ArvinPan/opencog,virneo/atomspace,andre-senna/opencog,TheNameIsNigel/opencog,rodsol/atomspace,rohit12/atomspace,roselleebarle04/opencog,kinoc/opencog,inflector/opencog,eddiemonroe/opencog,rohit12/atomspace,eddiemonroe/atomspace,ceefour/atomspace,sanuj/opencog,Allend575/opencog,gavrieltal/opencog,ceefour/opencog,tim777z/opencog,eddiemonroe/opencog,gavrieltal/opencog,andre-senna/opencog,ruiting/opencog,cosmoharrigan/atomspace,jlegendary/opencog,cosmoharrigan/opencog,ArvinPan/atomspace,rodsol/atomspace,jswiergo/atomspace,yantrabuddhi/opencog,cosmoharrigan/opencog,kim135797531/opencog,iAMr00t/opencog,Selameab/opencog,williampma/atomspace,ArvinPan/opencog,UIKit0/atomspace,gaapt/opencog,jlegendary/opencog,ceefour/atomspace,kim135797531/opencog,TheNameIsNigel/opencog,cosmoharrigan/opencog,ruiting/opencog,williampma/opencog,sumitsourabh/opencog,gavrieltal/opencog,virneo/atomspace,ceefour/opencog,rohit12/opencog,inflector/atomspace,Selameab/opencog,kim135797531/opencog,Tiggels/opencog,printedheart/opencog,roselleebarle04/opencog,TheNameIsNigel/opencog,tim777z/opencog,Selameab/opencog,printedheart/opencog,cosmoharrigan/atomspace,misgeatgit/atomspace,Allend575/opencog,Selameab/atomspace,MarcosPividori/atomspace,zhaozengguang/opencog,jswiergo/atomspace,rodsol/atomspace,eddiemonroe/opencog,kinoc/opencog,sumitsourabh/opencog,yantrabuddhi/opencog,anitzkin/opencog,ceefour/opencog,kim135797531/opencog,inflector/opencog,anitzkin/opencog,UIKit0/atomspace,inflector/opencog,UIKit0/atomspace,AmeBel/opencog,jswiergo/atomspace,misgeatgit/opencog,shujingke/opencog,AmeBel/atomspace,ArvinPan/atomspace,iAMr00t/opencog,sanuj/opencog,ruiting/opencog,shujingke/opencog,anitzkin/opencog,rodsol/opencog,ArvinPan/atomspace,virneo/atomspace,virneo/opencog,williampma/opencog,zhaozengguang/opencog,cosmoharrigan/opencog,misgeatgit/atomspace,printedheart/atomspace,rodsol/opencog,sumitsourabh/opencog,Allend575/opencog,yantrabuddhi/opencog,Selameab/opencog,iAMr00t/opencog,Allend575/opencog,inflector/opencog,williampma/atomspace,eddiemonroe/atomspace,sanuj/opencog,inflector/opencog,sanuj/opencog,Tiggels/opencog,ceefour/opencog,jlegendary/opencog,yantrabuddhi/atomspace,prateeksaxena2809/opencog,roselleebarle04/opencog