Make map drawing commands fail on bad flags

Also affects mapping at movement prompts of navigate, march, move,
test, transport.

diff --git a/src/lib/subs/maps.c b/src/lib/subs/maps.c
index 0c03b7eee46252ab0a222ce8f6c7ac4107262152..b109b453d8aabf88b0777b2b3da263e117461eda 100644 (file)
--- a/src/lib/subs/maps.c
+++ b/src/lib/subs/maps.c
@@ -120,7 +120,7 @@ do_map(int bmap, int unit_type, char *arg, char *map_flags_arg)
        default:
        bad_flag:
            pr("Bad flag %c!\n", *b);
-           break;
+           return RET_SYN;
        }
     }
     return draw_map(bmap, origin, map_flags, &ns);