resolve BUGFIX actions cannot have when either

Fixes #268

Author: michalvasko

src/resolve.c

@@ -5827,7 +5827,7 @@ resolve_when(struct lyd_node *node, int *result)
     assert(node);
     memset(&set, 0, sizeof set);
 
-    if (!(node->schema->nodetype & (LYS_NOTIF | LYS_RPC)) && (((struct lys_node_container *)node->schema)->when)) {
+    if (!(node->schema->nodetype & (LYS_NOTIF | LYS_RPC | LYS_ACTION)) && (((struct lys_node_container *)node->schema)->when)) {
         /* make the node dummy for the evaluation */
         node->validity |= LYD_VAL_INUSE;
         rc = lyxp_eval(((struct lys_node_container *)node->schema)->when->cond, node, LYXP_NODE_ELEM, &set, LYXP_WHEN);