add explicit casts

mrbgems/mruby-range-ext/src/range.c

@@ -156,7 +156,7 @@ mrb_range_size(mrb_state *mrb, mrb_value range)
     }
     if (isinf(n+1))
       return mrb_float_value(mrb, INFINITY);
-    return mrb_fixnum_value(n+1);
+    return mrb_fixnum_value((mrb_int)n+1);
   }
   return mrb_nil_value();
 }

mrbgems/mruby-time/src/time.c

@@ -194,7 +194,7 @@ time_update_datetime(mrb_state *mrb, struct mrb_time *self)
     aid = localtime_r(&self->sec, &self->datetime);
   }
   if (!aid) {
-    mrb_raisef(mrb, E_ARGUMENT_ERROR, "%S out of Time range", mrb_float_value(mrb, self->sec));
+    mrb_raisef(mrb, E_ARGUMENT_ERROR, "%S out of Time range", mrb_float_value(mrb, (mrb_float)self->sec));
     /* not reached */
     return NULL;
   }