smesh: [skip ci] comment out call of std::set_unexpected that has been removed in C++17

src/3rdParty/salomesmesh/inc/Utils_ExceptHandlers.hxx

@@ -42,7 +42,7 @@ class UTILS_EXPORT Unexpect { //save / retrieve unexpected exceptions treatment
   // std::set_unexpected has been removed in C++17
     Unexpect( PVF f ) 
       { /*old = std::set_unexpected(f);*/old = f; }
-  ~Unexpect() { std::set_unexpected(old); }
+  ~Unexpect() { /*std::set_unexpected(old);*/ }
 #else
     Unexpect( PVF f ) 
       { old = ::set_unexpected(f); }