Fixed a bug in the shell runtime, where it would try to use the port variable even if one wasn't allocated.
Fixed a bug in the shell runtime, where it would try to use the port variable even if one wasn't allocated.

kaze/paasmaker,paasmaker/paasmaker,kaze/paasmaker,paasmaker/paasmaker,kaze/paasmaker,kaze/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,kaze/paasmaker