netapp plugin: Document the graceful return if statistics are not wanted.

Unfortunately this behavior isn't exactly obvious.

diff --git a/src/netapp.c b/src/netapp.c
index c294f69..a4b30cc 100644 (file)
--- a/src/netapp.c
+++ b/src/netapp.c
@@ -806,6 +806,7 @@ static int cna_query_wafl (host_config_t *host) /* {{{ */
        if (host == NULL)
                return (EINVAL);
 
+       /* If WAFL was not configured, return without doing anything. */
        if (host->cfg_wafl == NULL)
                return (0);
 
@@ -998,6 +999,8 @@ static int cna_query_disk (host_config_t *host) /* {{{ */
        if (host == NULL)
                return (EINVAL);
 
+       /* If the user did not configure disk statistics, return without doing
+        * anything. */
        if (host->cfg_disk == NULL)
                return (0);