simplify config list to node table

diff --git a/libecoli/ecoli_node_helper.c b/libecoli/ecoli_node_helper.c
index 9ec7e89..94811f2 100644 (file)
--- a/libecoli/ecoli_node_helper.c
+++ b/libecoli/ecoli_node_helper.c
@@ -19,7 +19,7 @@ ec_node_config_node_list_to_table(const struct ec_config *config,
 {
        struct ec_node **table = NULL;
        struct ec_config *child;
-       size_t n, i;
+       ssize_t n, i;
 
        *len = 0;
 
@@ -33,21 +33,20 @@ ec_node_config_node_list_to_table(const struct ec_config *config,
                return NULL;
        }
 
-       n = 0;
-       TAILQ_FOREACH(child, &config->list, next) {
-               if (ec_config_get_type(child) != EC_CONFIG_TYPE_NODE) {
-                       errno = EINVAL;
-                       return NULL;
-               }
-               n++;
-       }
+       n = ec_config_count(config);
+       if (n < 0)
+               return NULL;
 
-       table = ec_malloc(n * sizeof(*table));
+       table = ec_calloc(n, sizeof(*table));
        if (table == NULL)
                goto fail;
 
        n = 0;
        TAILQ_FOREACH(child, &config->list, next) {
+               if (ec_config_get_type(child) != EC_CONFIG_TYPE_NODE) {
+                       errno = EINVAL;
+                       goto fail;
+               }
                table[n] = ec_node_clone(child->node);
                n++;
        }