Fixed bug affecting iteration over signleton containers.
Fixed bug affecting iteration over signleton containers.

jtobey/javascript-bignum,angeni8/javascript-bignum,angeni8/javascript-bignum,angeni8/javascript-bignum,jtobey/javascript-bignum,jtobey/javascript-bignum,jtobey/javascript-bignum,jtobey/javascript-bignum,angeni8/javascript-bignum,angeni8/javascript-bignum,angeni8/javascript-bignum,jtobey/javascript-bignum