Clear compiler warnings

[SVN r75185]

test/boost_no_initializer_lists.ipp

@@ -16,6 +16,8 @@
 
 namespace boost_no_initializer_lists {
 
+void quiet_warning(const std::initializer_list<int>&){}
+
 void f(std::initializer_list<int>)
 {
 }
@@ -25,6 +27,7 @@ int test()
     std::vector<std::string> v{"once", "upon", "a", "time"}; // See C++ std 8.5.4
     f( { 1, 2, 3, 4 } );
     std::initializer_list<int> x = { 1, 2 };
+    quiet_warning(x);
     return 0;
 }