input: fix alternative mapping if keyboard is used for confirmation.

input.cpp

@@ -1130,6 +1130,11 @@ void start_map_setting(int cnt, int set)
 	user_io_kbd(KEY_ENTER, 0);
 }
 
+int get_map_set()
+{
+	return mapping_set;
+}
+
 int get_map_button()
 {
 	return mapping_button;

input.h

@@ -81,6 +81,7 @@ int input_poll(int getchar);
 int is_key_pressed(int key);
 
 void start_map_setting(int cnt, int set = 0);
+int get_map_set();
 int get_map_button();
 int get_map_type();
 int get_map_clear();

menu.cpp

@@ -3522,7 +3522,7 @@ void HandleUI(void)
 
 			if (get_map_vid() || get_map_pid())
 			{
-				if (!is_menu() && get_map_type() && !has_default_map())
+				if (!is_menu() && get_map_type() && !has_default_map() && !get_map_set())
 				{
 					for (int i = 0; i < OsdGetSize(); i++) OsdWrite(i);
 					OsdWrite(6, "   You need to define this");