ERRNO not getting cleared

[Jim Hart]

localhost ~/lib bash2.05$ awk 'BEGIN{close("something");print 
ERRNO;"ls"|getline;print $0;print ERRNO}'
close of redirection that was never opened
Makefile
close of redirection that was never opened
localhost ~/lib bash2.05$ awk --version
GNU Awk 3.1.1

As the above code snippet demonstrates, the ERRNO variable isn't 
getting cleared when a related I/O is successful. I apologize if this 
is already fixed in a newer version.