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

diff --git a/src/xdisp.c b/src/xdisp.c
index 65b4c2c26e8c58a81c281a77723d5f301553009d..a1fad6a504d130e46d6ea18a297c43281db8abff 100644 (file)
--- 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);