extend #if to include both CLONGDOUBLE related definitions

Author: jbmohler

src/numpy_cpp.h

@@ -175,14 +175,14 @@ struct type_num_of<npy_clongdouble>
         value = NPY_CLONGDOUBLE
     };
 };
-#endif
 template <>
 struct type_num_of<std::complex<npy_longdouble> >
 {
     enum {
         value = NPY_CLONGDOUBLE
     };
 };
+#endif
 template <>
 struct type_num_of<PyObject *>
 {