revert mysteriously-applied last delta!

diff --git a/src/join.c b/src/join.c
index fb2064d4dc6b0afb93cda33e1c3388acce339be4..10a3999da6a795edb2038edb16c0e7e28be3e518 100644 (file)
--- a/src/join.c
+++ b/src/join.c
@@ -114,7 +114,7 @@ static struct outlist *outlist_end = &outlist_head;
 /* Tab character separating fields; if this is NUL fields are separated
    by any nonempty string of white space, otherwise by exactly one
    tab character.  */
-static char tab;
+static unsigned char tab;
 
 /* When using getopt_long_only, no long option can start with
    a character that is a short option.  */