Merge #568: options: flip listenonion to false if not listening

7f90dc2 options: flip listenonion to false if not listening (Vasil Dimov)

Pull request description:

  If the user has unchecked "Allow incoming connections" in
  `Settings->Options...->Network` then `fListen=false` is saved in
  `~/.config/Bitcoin/Bitcoin-Qt.conf`. This flips `-listen` to `false`
  during startup, but leaves `-listenonion` to `true`.

  This flipping of `-listen` is done in `OptionsModel::Init()` after
  `InitParameterInteraction()` has been executed which would have flipped
  `-listenonion`, should it have seen `-listen` being `false`
  (this is a difference between `bitcoind` and `bitcoin-qt`).

  Fixes: #567

ACKs for top commit:
  mzumsande:
    Tested ACK 7f90dc2
  hebasto:
    ACK 7f90dc2
  jonatack:
    utACK 7f90dc2
  ryanofsky:
    Code review ACK 7f90dc2.

Tree-SHA512: ff5095096858eae696293dc58d1cd5bd1bb60ef7c5d07d87308a0cf71c67da88cc00b301b550704625f136c4ba3a29905a934a766535a6422fe85d9662299d32

Author: hebasto

src/qt/optionsmodel.cpp

@@ -151,8 +151,11 @@ void OptionsModel::Init(bool resetSettings)
 
     if (!settings.contains("fListen"))
         settings.setValue("fListen", DEFAULT_LISTEN);
-    if (!gArgs.SoftSetBoolArg("-listen", settings.value("fListen").toBool()))
+    if (!gArgs.SoftSetBoolArg("-listen", settings.value("fListen").toBool())) {
         addOverriddenOption("-listen");
+    } else if (!settings.value("fListen").toBool()) {
+        gArgs.SoftSetBoolArg("-listenonion", false);
+    }
 
     if (!settings.contains("server")) {
         settings.setValue("server", false);