bug#17114: 24.3.50; right box line around image at first row and first column disappears

[YAMAMOTO Mitsuharu]

Steps to reproduce:

  1. $ emacs -Q -D &
  2. (insert-image (create-image "splash.png")
              (propertize " " 'face '(:box (:line-width 5)))) C-j
  3. C-p C-f
  4. Type C-l several times.

Result:

  The right box line disappears when the image comes to the first row.
  This does not happen if we have an space just before the image.

                                     YAMAMOTO Mitsuharu
                                mituharu@math.s.chiba-u.ac.jp

In GNU Emacs 24.3.50.1 (x86_64-apple-darwin13.1.0, GTK+ Version 3.10.7)
 of 2014-03-27 on YAMAMOTO-no-iMac.local
Repository revision: 116868 lekktu@gmail.com-20140327010136-w1ellpn2t78hv1fb
Windowing system distributor `The X.Org Foundation', version 11.0.11404000
Configured using:
 `configure --without-imagemagick LDFLAGS=-L/opt/local/lib
 CPPFLAGS=-I/opt/local/include'