bug#7937: not entirely sure how to go about this, my first bug fix.

[Stephen Meister]

Hi,
  I've tried to fix bug #7937 (my patch is attached).  I've also tried to
join the bug-gnu-emacs mailing list but I don't think the subscription
request has completed yet.  Is it required to be a member of that mailing
list before sending a message to bug-gnu-emacs@gnu.org?
  Also, is it ok to have the subject of my email formatted as I do here
("bug#XYZ: --description--")?
  Further, given that I'm currently unemployed for the next week is it
acceptable to submit code without an employer signing any paperwork as I
don't technically have an employer?  In the past I have completed the
copyright assignment for emacs ( gnu.org #1776190 via Craig Topham).

-steve

bug7937.patch
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