(update_line): Avoid indexing into obody by -1.

diff --git a/src/dispnew.c b/src/dispnew.c
index dbedca2a8179a72c6d2addecd9f6617c7443e450..35fba210be5b4a641378510047938a7bf4228af6 100644 (file)
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -1613,7 +1613,7 @@ update_line (frame, vpos)
       if (! current_frame->highlight[vpos])
        {
          if (!must_write_spaces)
-           while (obody[olen - 1] == SPACEGLYPH && olen > 0)
+           while (olen > 0 && obody[olen - 1] == SPACEGLYPH)
              olen--;
        }
       else