tfix #4236 - electrum - Electrum Bitcoin wallet
 (HTM) git clone https://git.parazyd.org/electrum
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       ---
 (DIR) commit 4ff3791cb93fcdda0b534bc2be575121f4d59705
 (DIR) parent 0180abc1791a169cd6c493a922900b143492bb6e
 (HTM) Author: SomberNight <somber.night@protonmail.com>
       Date:   Fri,  6 Apr 2018 16:43:11 +0200
       
       fix #4236
       
       Diffstat:
         M lib/transaction.py                  |       7 +++----
       
       1 file changed, 3 insertions(+), 4 deletions(-)
       ---
 (DIR) diff --git a/lib/transaction.py b/lib/transaction.py
       t@@ -805,18 +805,17 @@ class Transaction:
        
            @classmethod
            def get_preimage_script(self, txin):
       -        # only for non-segwit
       +        pubkeys, x_pubkeys = self.get_sorted_pubkeys(txin)
                if txin['type'] == 'p2pkh':
                    return bitcoin.address_to_script(txin['address'])
                elif txin['type'] in ['p2sh', 'p2wsh', 'p2wsh-p2sh']:
       -            pubkeys, x_pubkeys = self.get_sorted_pubkeys(txin)
                    return multisig_script(pubkeys, txin['num_sig'])
                elif txin['type'] in ['p2wpkh', 'p2wpkh-p2sh']:
       -            pubkey = txin['pubkeys'][0]
       +            pubkey = pubkeys[0]
                    pkh = bh2u(bitcoin.hash_160(bfh(pubkey)))
                    return '76a9' + push_script(pkh) + '88ac'
                elif txin['type'] == 'p2pk':
       -            pubkey = txin['pubkeys'][0]
       +            pubkey = pubkeys[0]
                    return bitcoin.public_key_to_p2pk_script(pubkey)
                else:
                    raise TypeError('Unknown txin type', txin['type'])