Fix dumb inverted logic. Thanks, rspec!

lib/msf/core/db_manager/exploit_attempt.rb

@@ -119,7 +119,7 @@ module Msf::DBManager::ExploitAttempt
       username   = opts[:username]
       mname      = opts[:module]
 
-      if ! vuln.nil?
+      if vuln.nil?
         ref_names = mrefs.map { |ref|
           if ref.respond_to?(:ctx_id) and ref.respond_to?(:ctx_val)
             "#{ref.ctx_id}-#{ref.ctx_val}"

spec/support/shared/examples/msf/db_manager/exploit_attempt.rb

@@ -44,6 +44,7 @@ shared_examples_for 'Msf::DBManager::ExploitAttempt' do
 
     context 'without a vuln' do
       let(:vuln) { nil }
+
       specify do
         expect {
           report_exploit_success