isisd: fix potential null pointer in isis_affinity_map_check_use()

Reported by coverity scanner #1560313

Do not consider the affinity map is in use if the main isis struct is
not yet created.

Fixes: 9a65cf35da ("isisd: add affinity-map configuration hooks")
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>

diff --git a/isisd/isis_affinitymap.c b/isisd/isis_affinitymap.c
index e681e820be8723cad9964464d85d795a6931b263..3160427e4b702f16151d2ed5dd12367d0cb45a51 100644 (file)
--- a/isisd/isis_affinitymap.c
+++ b/isisd/isis_affinitymap.c
@@ -20,6 +20,9 @@ static bool isis_affinity_map_check_use(const char *affmap_name)
        struct affinity_map *map;
        uint16_t pos;
 
+       if (!isis)
+               return false;
+
        map = affinity_map_get(affmap_name);
        pos = map->bit_position;