Constify rotating_dash.

src/layout.c

@@ -851,7 +851,7 @@ void print_vfs_message (char *msg, ...)
 
 void rotate_dash (void)
 {
-    static char rotating_dash [] = "|/-\\";
+    static const char rotating_dash [] = "|/-\\";
     static int pos = 0;
 
     if (!nice_rotating_dash || (ok_to_refresh <= 0))