Fix warnings

include/fmt/chrono.h

@@ -480,17 +480,15 @@ struct chrono_formatter {
         std::chrono::duration<rep, Period>(val));
   }
 
-  Rep hour() const {
-    return static_cast<Rep>(mod((s.count() / 3600), 24));
-  }
+  Rep hour() const { return static_cast<Rep>(mod((s.count() / 3600), 24)); }
 
   Rep hour12() const {
-    Rep hour = mod((s.count() / 3600), 12);
+    Rep hour = static_cast<Rep>(mod((s.count() / 3600), 12));
     return hour <= 0 ? 12 : hour;
   }
 
-  Rep minute() const { return mod((s.count() / 60), 60); }
-  Rep second() const { return mod(s.count(), 60); }
+  Rep minute() const { return static_cast<Rep>(mod((s.count() / 60), 60)); }
+  Rep second() const { return static_cast<Rep>(mod(s.count(), 60)); }
 
   std::tm time() const {
     auto time = std::tm();