lib-sql db cache: Reaching max_unused_connections caused a crash later.

diff --git a/src/lib-sql/sql-db-cache.c b/src/lib-sql/sql-db-cache.c
index 4fcdc6f51eedd89e58fe8864f8080727c859caba..aa9377fa78c0baa35c3c81cc8410473d498d95dd 100644 (file)
--- a/src/lib-sql/sql-db-cache.c
+++ b/src/lib-sql/sql-db-cache.c
@@ -75,6 +75,7 @@ static void sql_db_cache_free_tail(struct sql_db_cache *cache)
        db = cache->unused_tail;
        ctx = SQL_DB_CACHE_CONTEXT(db);
        sql_db_cache_unlink(ctx);
+       hash_table_remove(cache->dbs, ctx->key);
 
        i_free(ctx->key);
        ctx->orig_deinit(db);