replace template with auto

A little simpler.

Signed-off-by: Rosen Penev <[email protected]>

Author: neheb

src/types.cpp

@@ -211,8 +211,7 @@ std::ostream& operator<<(std::ostream& os, const Rational& r) {
   return os << r.first << "/" << r.second;
 }
 
-template <typename T>
-static std::istream& fromStreamToRational(std::istream& is, T& r) {
+static std::istream& fromStreamToRational(std::istream& is, auto& r) {
   // http://dev.exiv2.org/boards/3/topics/1912?r=1915
   if (std::tolower(is.peek()) == 'f') {
     char F = 0;

src/utils.hpp

@@ -6,8 +6,7 @@
 
 namespace Exiv2::Internal {
 
-template <typename T>
-constexpr bool contains(std::string_view s, T c) {
+constexpr bool contains(std::string_view s, auto c) {
 #ifdef __cpp_lib_string_contains
   return s.contains(c);
 #else