src/cxx_supportlib/vendor-copy/websocketpp/websocketpp/utilities.hpp in passenger-6.0.7 vs src/cxx_supportlib/vendor-copy/websocketpp/websocketpp/utilities.hpp in passenger-6.0.8

@@ -70,14 +70,12 @@
 /// Helper less than functor for case insensitive find
 /**
  * Based on code from
  * http://stackoverflow.com/questions/3152241/case-insensitive-stdstring-find
  */
-struct ci_less : std::binary_function<std::string, std::string, bool> {
+struct ci_less {
     // case-independent (ci) compare_less binary function
-    struct nocase_compare
-      : public std::binary_function<unsigned char,unsigned char,bool>
-    {
+    struct nocase_compare {
         bool operator() (unsigned char const & c1, unsigned char const & c2) const {
             return tolower (c1) < tolower (c2);
         }
     };
     bool operator() (std::string const & s1, std::string const & s2) const {