Fixed adding message to data list before receiving messages

src/node.c

@@ -229,23 +229,29 @@ int add_data(unsigned char len, int64_t id, int16_t seqno, char *data) {
         // If the data list has never been used, or is empty ( same thing )
         if (data_list == NULL) {
             data_list = (list*) malloc(sizeof(struct list));
+
+            list *tmp = data_list;
+            // We create the next node of the linked list.
+            tmp->data = (void *) message;
+            tmp->next = NULL;
+            
+        } else {
+            // we move until the last element of the dala_list,
+            // and add or data there.
+            // We use a temporary address to avoid writing to the static list.
+            // Seems weird but ok.
+            list *tmp = data_list;
+            while(tmp->next != NULL){
+                tmp = tmp->next;
+            }
+
+            // We create the next node of the linked list.
+            list * new_node = malloc(sizeof(struct list));
+            new_node->data = (void *) message;
+
+            // Adding the message to the list.
+            tmp->next = (void *) new_node;
         }
-        // we move until the last element of the dala_list,
-        // and add or data there.
-        // We use a temporary address to avoid writing to the static list.
-        // Seems weird but ok.
-        list *tmp = data_list;
-        while(tmp->next != NULL){
-            tmp = tmp->next;
-        }
-
-        // We create the next node of the linked list.
-        list * new_node = malloc(sizeof(struct list));
-        new_node->data = (void *) message;
-
-        // Adding the message to the list.
-        tmp->next = (void *) new_node;
-
         return 1;
     } else {
         // Copy data