tree f9bd9ee78c032da7a73434253e0236dfd87b5931
parent 4ba56b8c2e1240e2526db357c3d8bed4e9777bad
author Guy Harris <guy@alum.mit.edu> 1527189069 -0700
committer Guy Harris <guy@alum.mit.edu> 1527189069 -0700

Cast dport and sport to u_int before shifting them.

The result of the expression is ultimately going to be put into a u_int;
cast them to u_int so that we'll be shifting unsigned values left rather
than int values, to avoid undefined behavior.

This should fix GitHub issue #681.