tfix #4047 - electrum - Electrum Bitcoin wallet
 (HTM) git clone https://git.parazyd.org/electrum
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) Submodules
       ---
 (DIR) commit 3a5a0af48f4df77bae8f4c9df1eeddbee267e4f0
 (DIR) parent d0025491760aab9040ba31e2683adb220fd80345
 (HTM) Author: SomberNight <somber.night@protonmail.com>
       Date:   Tue,  6 Mar 2018 17:20:22 +0100
       
       fix #4047
       
       Diffstat:
         M gui/qt/main_window.py               |       2 +-
       
       1 file changed, 1 insertion(+), 1 deletion(-)
       ---
 (DIR) diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
       t@@ -664,7 +664,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
                    fiat_e.is_last_edited = (edit == fiat_e)
                    amount = edit.get_amount()
                    rate = self.fx.exchange_rate() if self.fx else None
       -            if rate is None or amount is None:
       +            if rate.is_nan() or amount is None:
                        if edit is fiat_e:
                            btc_e.setText("")
                            if fee_e: