RNA: ID properties were not being shown as RNA properties anymore, fixed.

Python: fix two warnings (initialize to NULL).

source/blender/python/intern/bpy_operator_wrap.c

@@ -187,7 +187,7 @@ static int PYTHON_OT_generic(int mode, bContext *C, wmOperator *op, wmEvent *eve
 {
 	PyObject *py_class = op->type->pyop_data;
 	PyObject *args;
-	PyObject *ret= NULL, *py_class_instance, *item;
+	PyObject *ret= NULL, *py_class_instance, *item= NULL;
 	int ret_flag= (mode==PYOP_POLL ? 0:OPERATOR_CANCELLED);
 
 	PyGILState_STATE gilstate = PyGILState_Ensure();

source/blender/python/intern/bpy_rna.c

@@ -1092,6 +1092,7 @@ PyObject *pyrna_param_to_py(PointerRNA *ptr, PropertyRNA *prop, void *data)
 		case PROP_COLLECTION:
 			/* XXX not supported yet
 			 * ret = pyrna_prop_CreatePyObject(ptr, prop); */
+			ret = NULL;
 			break;
 		default:
 			PyErr_Format(PyExc_AttributeError, "RNA Error: unknown type \"%d\" (pyrna_param_to_py)", type);