tn5250 hanging

[Phil Gregory <pgregory@xxxxxxxxxxx>]

tn5250 has been occassionally hanging on me, failing to go on to a final
screen and displaying "X SYSTEM" at the bottom of the screen.  I finally
got the bug to reproduce reliably.

The problem occurs when I run a PDM search through the source members in a 
file.  I see the names of the members flashing by as they are searched,
then a match is found and is displayed.  The screen showing the member
disappears as soon as it appears, leaving me with the previous screen (an
SEU startup screen saying that it's loading the member) and "X SYSTEM" at
the bottom.

Trace file available.

(On a side note, my problem with field position under curses cleared up
afer I reinstalled the terminfo files.  It was a problem with my setup.)
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