printer tree BUGFIX implicit case if-features

In the pyang output, the implicit case node
does not copy if-features from his child.
diff --git a/src/printer_tree.c b/src/printer_tree.c
index a6dc869..0eff496 100644
--- a/src/printer_tree.c
+++ b/src/printer_tree.c
@@ -2521,7 +2521,7 @@
     ret.name.module_prefix = node.name.module_prefix;
     ret.name.str = node.name.str;
     ret.type = TRP_EMPTY_TRT_TYPE;
-    ret.iffeatures = node.iffeatures;
+    ret.iffeatures = 0;
     ret.last_one = node.last_one;
 
     return ret;
@@ -3153,7 +3153,6 @@
 {
     (void) ca;
     const struct lysc_node *cn;
-    const struct lysc_node *child;
     struct trt_node ret;
 
     assert(tc && tc->cn);
@@ -3192,11 +3191,8 @@
         /* <type> */
         ret.type = TRP_EMPTY_TRT_TYPE;
 
-        /* copy <iffeature> from child */
-        child = lysc_node_child(cn);
-        ret.iffeatures = child ?
-                trop_node_has_iffeature(TRP_TREE_CTX_GET_LYSP_NODE(child)) :
-                0;
+        /* <iffeature> */
+        ret.iffeatures = 0;
     }
 
     ret.last_one = !tro_next_sibling(cn, tc->lysc_tree);
diff --git a/tests/utests/schema/test_printer_tree.c b/tests/utests/schema/test_printer_tree.c
index 6b42d84..eebc8b5 100644
--- a/tests/utests/schema/test_printer_tree.c
+++ b/tests/utests/schema/test_printer_tree.c
@@ -428,11 +428,15 @@
             "  yang-version 1.1;\n"
             "  namespace \"x:y\";\n"
             "  prefix x;\n"
+            "\n"
+            "  feature foo;\n"
             "  choice my_choice {\n"
             "    case my_case;\n"
             "  }\n"
             "  choice shorthand {\n"
-            "    container cont1;\n"
+            "    container cont1 {\n"
+            "      if-feature \"foo\";\n"
+            "    }\n"
             "    container cont2 {\n"
             "      container cont3;\n"
             "    }\n"
@@ -456,7 +460,7 @@
             "  |  +--:(my_case)\n"
             "  +--rw (shorthand)?\n"
             "  |  +--:(cont1)\n"
-            "  |  |  +--rw cont1\n"
+            "  |  |  +--rw cont1 {foo}?\n"
             "  |  +--:(cont2)\n"
             "  |     +--rw cont2\n"
             "  |        +--rw cont3\n"
@@ -469,7 +473,9 @@
             "           +--rw cont2\n"
             "              +--rw cont3\n";
 
-    UTEST_ADD_MODULE(orig, LYS_IN_YANG, NULL, &mod);
+    const char *feats[] = {"foo", NULL};
+
+    UTEST_ADD_MODULE(orig, LYS_IN_YANG, feats, &mod);
     TEST_LOCAL_PRINT(mod, 72);
     assert_int_equal(strlen(expect), ly_out_printed(UTEST_OUT));
     assert_string_equal(printed, expect);