write_redis: re-add colon dropped in b7984797

When running f3706b0b87, the following command gets sent to redis:
  "ZADD" "collectd/hostname/entropy/entropy" "1415487432.000000" "1415487432:932"
Meaning the value actually stored, and later returned by redis is:
"<timstamp>:<value>".

b7984797 accidentally dropped the comma separating the timestamp and the
value, which leads the plugin to store a somewhat confusing value in
redis:
  "ZADD" "collectd/hostname/entropy/entropy" "1415487432.000000" "1415487432932"

diff --git a/src/write_redis.c b/src/write_redis.c
index 58f2cae..1d9ec27 100644 (file)
--- a/src/write_redis.c
+++ b/src/write_redis.c
@@ -84,7 +84,7 @@ static int wr_write (const data_set_t *ds, /* {{{ */
   }                                                                  \
 } while (0)
 
-  APPEND ("%lu", (unsigned long) vl->time);
+  APPEND ("%lu:", (unsigned long) vl->time);
   for (i = 0; i < ds->ds_num; i++)
   {
     if (ds->ds[i].type == DS_TYPE_COUNTER)