It seems useless to do that since the code tests for both source
length and destination to be non-zero. This fixes a cut'n'paste
problem in xterm where the paste length was limited to 1024 (BUFSIZ)
in button.c.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>