tail plugin: mark a few variables as static

diff --git a/src/tail.c b/src/tail.c
index 5c74e3d..ffdba8a 100644 (file)
--- a/src/tail.c
+++ b/src/tail.c
@@ -56,9 +56,9 @@ struct ctail_config_match_s
 };
 typedef struct ctail_config_match_s ctail_config_match_t;
 
-cu_tail_match_t **tail_match_list = NULL;
-size_t tail_match_list_num = 0;
-cdtime_t tail_match_list_intervals[255];
+static cu_tail_match_t **tail_match_list = NULL;
+static size_t tail_match_list_num = 0;
+static cdtime_t tail_match_list_intervals[255];
 
 static int ctail_config_add_match_dstype (ctail_config_match_t *cm,
     oconfig_item_t *ci)