Fix RSpec/InstanceVariable cop (#27766)

spec/controllers/auth/passwords_controller_spec.rb

@@ -18,12 +18,14 @@ describe Auth::PasswordsController do
 
     before do
       request.env['devise.mapping'] = Devise.mappings[:user]
-      @token = user.send_reset_password_instructions
     end
 
     context 'with valid reset_password_token' do
       it 'returns http success' do
-        get :edit, params: { reset_password_token: @token }
+        token = user.send_reset_password_instructions
+
+        get :edit, params: { reset_password_token: token }
+
         expect(response).to have_http_status(200)
       end
     end
@@ -38,9 +40,9 @@ describe Auth::PasswordsController do
 
   describe 'POST #update' do
     let(:user) { Fabricate(:user) }
+    let(:password) { 'reset0password' }
 
     before do
-      @password = 'reset0password'
       request.env['devise.mapping'] = Devise.mappings[:user]
     end
 
@@ -50,9 +52,9 @@ describe Auth::PasswordsController do
       let!(:web_push_subscription) { Fabricate(:web_push_subscription, access_token: access_token) }
 
       before do
-        @token = user.send_reset_password_instructions
+        token = user.send_reset_password_instructions
 
-        post :update, params: { user: { password: @password, password_confirmation: @password, reset_password_token: @token } }
+        post :update, params: { user: { password: password, password_confirmation: password, reset_password_token: token } }
       end
 
       it 'redirect to sign in' do
@@ -63,7 +65,7 @@ describe Auth::PasswordsController do
         this_user = User.find(user.id)
 
         expect(this_user).to_not be_nil
-        expect(this_user.valid_password?(@password)).to be true
+        expect(this_user.valid_password?(password)).to be true
       end
 
       it 'deactivates all sessions' do
@@ -81,7 +83,7 @@ describe Auth::PasswordsController do
 
     context 'with invalid reset_password_token' do
       before do
-        post :update, params: { user: { password: @password, password_confirmation: @password, reset_password_token: 'some_invalid_value' } }
+        post :update, params: { user: { password: password, password_confirmation: password, reset_password_token: 'some_invalid_value' } }
       end
 
       it 'renders reset password' do