Fix

Author: gennaroprota

example/static_cstring/static_cstring_test.cpp

@@ -96,15 +96,18 @@ testCStringTypeTraits()
 {
     {
         using S = static_cstring<0>;
-        CStringTypeTraits< S >{};
+        CStringTypeTraits< S > check;
+        static_cast<void>(check);
     }
     {
         using S = static_cstring<63>;
-        CStringTypeTraits< S >{};
+        CStringTypeTraits< S > check;
+        static_cast<void>(check);
     }
     {
         using S = static_cstring<300>;
-        CStringTypeTraits< S >{};
+        CStringTypeTraits< S > check;
+        static_cast<void>(check);
     }
 }