Add explicit cast to silence warnings on AppVeyor.

mrbgems/mruby-method/src/method.c

@@ -110,7 +110,7 @@ method_eql(mrb_state *mrb, mrb_value self)
 
 static mrb_value
 mcall(mrb_state *mrb, mrb_value recv, mrb_value proc, mrb_value name, struct RClass *owner,
-      int argc, mrb_value *argv, mrb_value block)
+      mrb_int argc, mrb_value *argv, mrb_value block)
 {
   mrb_value ret;
   mrb_sym orig_mid = mrb->c->ci->mid;

mrbgems/mruby-rational/src/rational.c

@@ -112,7 +112,7 @@ rational_s_new(mrb_state *mrb, mrb_value self)
       mrb_float denomf = mrb_to_flo(mrb, denomv);
 
       DROP_PRECISION(denomf < MRB_INT_MIN || denomf > MRB_INT_MAX, numerator, denomf);
-      denominator = denomf;
+      denominator = (mrb_int)denomf;
     }
   }
   else {
@@ -125,11 +125,11 @@ rational_s_new(mrb_state *mrb, mrb_value self)
       mrb_float denomf = mrb_to_flo(mrb, denomv);
 
       DROP_PRECISION(denomf < MRB_INT_MIN || denomf > MRB_INT_MAX, numf, denomf);
-      denominator = denomf;
+      denominator = (mrb_int)denomf;
     }
 
     DROP_PRECISION(numf < MRB_INT_MIN || numf > MRB_INT_MAX, numf, denominator);
-    numerator = numf;
+    numerator = (mrb_int)numf;
   }
 #endif