Fix throw with exceptions disabled

include/fmt/chrono.h

@@ -1404,7 +1404,7 @@ inline Int to_nonnegative_int(T value, Int upper) {
 template <typename T, typename Int, FMT_ENABLE_IF(!std::is_integral<T>::value)>
 inline Int to_nonnegative_int(T value, Int upper) {
   if (value < 0 || value > static_cast<T>(upper))
-    throw format_error("invalid value");
+    FMT_THROW(format_error("invalid value"));
   return static_cast<Int>(value);
 }