fix further warnings and newly introduced error

examples/undocumented/libshogun/converter_jade_bss.cpp

@@ -41,11 +41,11 @@ void test()
 	for(int i = 0; i < n_samples; i++)
 	{
 		// Sin wave
-		S(0,i) = sin(2*time(0,i));
+		S(0,i) = sin(2*time[i]);
 		S(0,i) += 0.2*CMath::randn_double(); 
 
 		// Square wave
-		S(1,i) = sin(3*time(0,i)) < 0 ? -1 : 1;
+		S(1,i) = sin(3*time[i]) < 0 ? -1 : 1;
 		S(1,i) += 0.2*CMath::randn_double();
 	}
 

src/shogun/io/HDF5File.cpp

@@ -419,6 +419,7 @@ hid_t CHDF5File::get_compatible_type(H5T_class_t t_class,
 				SG_ERROR("complex128_t not compatible with HDF5File!");
 				return -1;
 			case PT_SGOBJECT:
+			case PT_UNDEFINED:
 				SG_ERROR("Implementation error during writing "
 						 "HDF5File!");
 				return -1;

src/shogun/io/SerializableJsonReader00.cpp

@@ -86,6 +86,7 @@ SerializableJsonReader00::read_scalar_wrapped(
 				 " for reading from JsonFile!");
 		break;
 	case PT_SGOBJECT:
+	case PT_UNDEFINED:
 		SG_ERROR("read_scalar_wrapped(): Implementation error during"
 				 " reading JsonFile!");
 		return false;