fix: src\kernel.c(874): warning C4244: 'function': conversion from 'mrb_int'...

fix: src\kernel.c(874): warning C4244: 'function': conversion from 'mrb_int' to 'int', possible loss of data

include/mruby/error.h

@@ -24,7 +24,7 @@ struct RException {
 MRB_API void mrb_sys_fail(mrb_state *mrb, const char *mesg);
 MRB_API mrb_value mrb_exc_new_str(mrb_state *mrb, struct RClass* c, mrb_value str);
 #define mrb_exc_new_str_lit(mrb, c, lit) mrb_exc_new_str(mrb, c, mrb_str_new_lit(mrb, lit))
-MRB_API mrb_value mrb_make_exception(mrb_state *mrb, int argc, const mrb_value *argv);
+MRB_API mrb_value mrb_make_exception(mrb_state *mrb, mrb_int argc, const mrb_value *argv);
 MRB_API mrb_value mrb_exc_backtrace(mrb_state *mrb, mrb_value exc);
 MRB_API mrb_value mrb_get_backtrace(mrb_state *mrb);
 MRB_API mrb_noreturn void mrb_no_method_error(mrb_state *mrb, mrb_sym id, mrb_value args, const char *fmt, ...);

src/error.c

@@ -386,7 +386,7 @@ mrb_bug(mrb_state *mrb, const char *fmt, ...)
 }
 
 MRB_API mrb_value
-mrb_make_exception(mrb_state *mrb, int argc, const mrb_value *argv)
+mrb_make_exception(mrb_state *mrb, mrb_int argc, const mrb_value *argv)
 {
   mrb_value mesg;
   int n;