Pacify GCC -Wmaybe-uninitialized in xdisp.c

* src/xdisp.c (face_before_or_after_it_pos): Use do-while rather
than while loop to avoid GCC -Wmaybe-uninitialized diagnostic with
charpos.  The loop should always execute at least once anyway.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 34b5ca3cced..0d0bc91efd9 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -4024,13 +4024,16 @@ face_before_or_after_it_pos (struct it *it, bool before_p)
               SAVE_IT (it_copy, *it, it_copy_data);
               IT_STRING_CHARPOS (it_copy) = 0;
               bidi_init_it (0, 0, FRAME_WINDOW_P (it_copy.f), &it_copy.bidi_it);
-              while (IT_STRING_CHARPOS (it_copy) != IT_STRING_CHARPOS (*it))
+
+              do
                 {
                   charpos = IT_STRING_CHARPOS (it_copy);
                   if (charpos >= SCHARS (it->string))
                     break;
                   bidi_move_to_visually_next (&it_copy.bidi_it);
                 }
+              while (IT_STRING_CHARPOS (it_copy) != IT_STRING_CHARPOS (*it));
+
               RESTORE_IT (it, it, it_copy_data);
             }
           else