catch TypeError for matched pairs Frag leak

Author: zerosum0x0

lib/msf/core/exploit/smb/client/psexec_ms17_010.rb

@@ -311,7 +311,11 @@ def find_accessible_named_pipe()
 
   # todo: spice it up with EternalSynergy output
   def exploit_matched_pairs(pipe_handle)
-    leak_frag_size(pipe_handle.file_id)
+    begin
+      leak_frag_size(pipe_handle.file_id)
+    rescue TypeError => e
+      raise MS17_010_Error 'TypeError leaking initial Frag size, is the target patched?'
+    end
 
     # we have all info for offsets now
     #@ctx = @ctx.merge(OS_ARCH_INFO[@ctx['os']][@ctx['arch']])