do not try to interpret implementation specific strings as tz definition

diff --git a/src/time/__tz.c b/src/time/__tz.c
index fbe3d4921532e5bd70e13acf953c77045b55f42e..93d59e8dadf141dea52f0dcb9baff5af5f65ff7c 100644 (file)
--- a/src/time/__tz.c
+++ b/src/time/__tz.c
@@ -166,6 +166,7 @@ static void do_tzset()
                                }
                        }
                }
+               if (!map) s = __gmt;
        }
 
        zi = map;