Fail pwchange validation if the new password is the same as the old one

actions_user.go

@@ -38,6 +38,9 @@ func (r *ChangeUserPasswordRequest) Validate(rctx *RequestContext) error {
 	if err := rctx.fieldValidators.password(rctx.Context, r.Password); err != nil {
 		return newValidationError(nil, "password", err.Error())
 	}
+	if r.Password == r.CurPassword {
+		return newValidationError(nil, "password", "The new password can't be the same as the old one")
+	}
 	return r.PrivilegedRequestBase.Validate(rctx)
 }