check before dereference.

Found by PVS-Studio

diff --git a/src/modules/rlm_passwd/rlm_passwd.c b/src/modules/rlm_passwd/rlm_passwd.c
index e8cd8af..b6b9ba0 100644 (file)
--- a/src/modules/rlm_passwd/rlm_passwd.c
+++ b/src/modules/rlm_passwd/rlm_passwd.c
@@ -134,10 +134,11 @@ static void release_hash_table(struct hashtable * ht){
        int i;
 
        if (!ht) return;
-       for (i = 0; i < ht->tablesize; i++)
-               if (ht->table[i])
-                       destroy_password(ht->table[i]);
        if (ht->table) {
+               for (i = 0; i < ht->tablesize; i++) {
+                       if (ht->table[i])
+                               destroy_password(ht->table[i]);
+               }
                free(ht->table);
                ht->table = NULL;
        }