(message2_nolog): Don't call fwrite will null string.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 65b4c2c26e8..a1fad6a504d 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -418,7 +418,8 @@ message2_nolog (m, len)
       if (noninteractive_need_newline)
         putc ('\n', stderr);
       noninteractive_need_newline = 0;
-      fwrite (m, len, 1, stderr);
+      if (m)
+        fwrite (m, len, 1, stderr);
       if (cursor_in_echo_area == 0)
         fprintf (stderr, "\n");
       fflush (stderr);