patch 9.0.1634: message is cleared when removing mode message

Problem:    Message is cleared when removing mode message (Gary Johnson).
Solution:   Do not clear the command line after displaying a message.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1634,
 /**/
     1633,
 /**/