memsize.c: handle `MRB_TT_RATIONAL` and `MRB_TT_COMPLEX`.

mrbgems/mruby-os-memsize/src/memsize.c

@@ -126,8 +126,25 @@ os_memsize_of_object(mrb_state* mrb, mrb_value obj)
     case MRB_TT_INTEGER:
       if (mrb_immediate_p(obj))
         break;
+  case MRB_TT_RATIONAL:
+#if defined(MRB_USE_RATIONAL)
+#if defined(MRB_INT64) && defined(MRB_32BIT)
+    size += sizeof(mrb_int)*2;
+#endif
+    size += mrb_objspace_page_slot_size();
+#endif
+    break;
+
+  case MRB_TT_COMPLEX:
+#if defined(MRB_USE_COMPLEX)
+#if defined(MRB_32BIT) && !defined(MRB_USE_FLOAT32)
+    size += sizeof(mrb_float)*2;
+#endif
+    size += mrb_objspace_page_slot_size();
+#endif
+    break;
     case MRB_TT_DATA:
-  case MRB_TT_ISTRUCT:
+    case MRB_TT_ISTRUCT:
       size += mrb_objspace_page_slot_size();
       break;
     /*  zero heap size types.