Fixed build error
Fixed build error

XadillaX/node-kdtree,justinethier/node-kdtree,XadillaX/node-kdtree,XadillaX/node-kdtree,justinethier/node-kdtree,justinethier/node-kdtree,XadillaX/node-kdtree,justinethier/node-kdtree