Deduction guides for the scope guards updated (#105).

include/scope_exit.h

 
 
     template<class EF>
-    scope_exit(EF&& ef) -> scope_exit<std::decay_t<EF>>;
+    scope_exit(EF) -> scope_exit<EF>;
 
 }
 

include/scope_fail.h

 
 
     template<class EF>
-    scope_fail(EF&& ef) -> scope_fail<std::decay_t<EF>>;
+    scope_fail(EF) -> scope_fail<EF>;
 
 }
 

include/scope_success.h

 
 
     template<class EF>
-    scope_success(EF&& ef) -> scope_success<std::decay_t<EF>>;
+    scope_success(EF) -> scope_success<EF>;
 
 }