Reduce code complexity easily

lib/msf/http/typo3/login.rb

@@ -12,7 +12,12 @@ module Msf::HTTP::Typo3::Login
       'method' => 'GET',
       'uri' => typo3_url_login
     })
-    if res_main and res_main.code == 200
+
+    unless res_main and res_main.code == 200
+      vprint_error('Can not reach login page')
+      return nil
+    end
+
     e = res_main.body.match(/<input type="hidden" id="rsa_e" name="e" value="(\d+)" \/>/)[1]
     n = res_main.body.match(/<input type="hidden" id="rsa_n" name="n" value="(\w+)" \/>/)[1]
     vprint_status("e: #{e}")
@@ -52,10 +57,6 @@ module Msf::HTTP::Typo3::Login
         return nil
       end
     end
-    else
-      vprint_error('Can not reach login page')
-      return nil
-    end
 
     return nil
   end