Fixed argument checking in __init__ methods of Interface1D, Predicates,

Functions, and StrokeShader types.

source/blender/freestyle/intern/python/BPy_UnaryPredicate1D.cpp

@@ -179,6 +179,8 @@ PyMODINIT_FUNC UnaryPredicate1D_Init( PyObject *module )
 
 int UnaryPredicate1D___init__(BPy_UnaryPredicate1D *self, PyObject *args, PyObject *kwds)
 {
+	if( !PyArg_ParseTuple(args, "") )	
+		return -1;
 	self->up1D = new UnaryPredicate1D();
 	self->up1D->py_up1D = (PyObject *) self;
 	return 0;