(w32_read_socket): Need to erase background

immediately before repainting exposed region.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/w32term.c b/src/w32term.c
index 4f1fdb369c7..4299d1d6a0e 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -2408,6 +2408,8 @@ w32_read_socket (sd, bufp, numchars, waitp, expected)
                   }
                 else
                   {
+                    /* Erase background again for safety.  */
+                    win32_clear_rect (f, NULL, &msg.rect);
                     dumprectangle (f,
                                    msg.rect.left,
                                    msg.rect.top,