fix print arch key

Author: zerosum0x0

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

@@ -658,7 +658,7 @@ def exploit_fish_barrel(pipe_handle)
       tinfo = tinfo.merge(xinfo['OFFSETS'])
       tinfo = tinfo.merge(xinfo['SESSION'])
 
-      vprint_status("Attempt controlling next transaction on #{@ctx['ARCH']}")
+      vprint_status("Attempt controlling next transaction on #{tinfo['ARCH']}")
       xHEAP_CHUNK_PAD_SIZE = (tinfo['POOL_ALIGN'] - (tinfo['TRANS_SIZE']+xHEAP_HDR_SIZE) % tinfo['POOL_ALIGN']) % tinfo['POOL_ALIGN']
       xNEXT_TRANS_OFFSET = 0xf00 - shift_indata_byte + xHEAP_CHUNK_PAD_SIZE + xHEAP_HDR_SIZE