deth_ctf : The variable of Vault:owner should be declared as immutable

[hrmneffdii]

Severity : Informational

Description

State variables that is Vault:owner, it is not updated following functionality or after deployment. It should be declared as immutable variable to save more gas.

Recommendation

Add the immutable syntax to the variable Vault:owner

-      address public owner;
+     address public immutable i_owner;
       . . . 

      constructor(address _owner){
-     owner     = _owner;
+    i_owner  = _owner;
     }

[0xdeth]

Informational.