Logger: fix make_output

src/logger_io.h

@@ -51,10 +51,10 @@ __attribute__((always_inline)) INLINE static void hydro_write_index(
 
   /* List what we want to write */
   list[0] = io_make_output_field("ParticleIDs", ULONGLONG, 1,
-                                 UNIT_CONV_NO_UNITS, parts, id);
+                                 UNIT_CONV_NO_UNITS, 0.f, parts, id, "will be erased");
 
-  list[1] = io_make_output_field("Offset", ULONGLONG, 1, UNIT_CONV_NO_UNITS,
-                                 xparts, logger_data.last_offset);
+  list[1] = io_make_output_field("Offset", ULONGLONG, 1, UNIT_CONV_NO_UNITS, 0.f,
+                                 xparts, logger_data.last_offset, "will be erased");
 }
 #endif