autodetection fixing

Author: Maurice Popp

modules/exploits/windows/http/geutebrueck_gcore_x64_rce_bo.rb

@@ -227,7 +227,7 @@ def ropchain(target)
 
         def exploit
           if target['auto']
-            checkcode, self.target = fingerprint
+            checkcode, target = fingerprint
             fail_with(Failure::NotVulnerable, 'No vulnerable Version detected - exploit aborted.') if checkcode.to_s.include? 'unknown'
             target_rop, target_overwrite, target_stack_align = ropchain(target)
           else