(msdos_stdcolor_name): Remove const from return value.

src/dosfns.c

@@ -433,7 +433,7 @@ msdos_stdcolor_idx (const char *name)
 }
 
 /* Given a color index, return its standard name.  */
-const char *
+char *
 msdos_stdcolor_name (int idx)
 {
   if (idx < 0 || idx >= sizeof (vga_colors) / sizeof (vga_colors[0]))

src/dosfns.h

@@ -39,5 +39,5 @@ extern Lisp_Object Vdos_display_scancodes;
 extern Lisp_Object Qmsdos_color_translate;
 
 extern int         msdos_stdcolor_idx  P_ ((const char *));
-extern const char *msdos_stdcolor_name P_ ((int));
+extern char       *msdos_stdcolor_name P_ ((int));
 #endif