Fix specs for the ghost user feature.

spec/models/abuse_report_spec.rb

@@ -2,7 +2,7 @@ require 'rails_helper'
 
 RSpec.describe AbuseReport, type: :model do
   subject     { create(:abuse_report) }
-  let(:user)  { create(:user) }
+  let(:user)  { create(:admin) }
 
   it { expect(subject).to be_valid }
 

spec/models/user_spec.rb

@@ -211,13 +211,15 @@ describe User, models: true do
 
     describe 'ghost users' do
       it 'does not allow a non-blocked ghost user' do
-        user = build(:user, :ghost, state: :active)
+        user = build(:user, :ghost)
+        user.state = 'active'
 
         expect(user).to be_invalid
       end
 
       it 'allows a blocked ghost user' do
-        user = build(:user, :ghost, state: :blocked)
+        user = build(:user, :ghost)
+        user.state = 'blocked'
 
         expect(user).to be_valid
       end