Merge #18062: gui: Fix unintialized WalletView::progressDialog

acf8abc7f3 gui: Fix unintialized WalletView::progressDialog (João Barbosa)

Pull request description:

  #17911 shows that it's possible to read the unintialized `progressDialog` in f32564f0a7/src/qt/walletview.cpp (L296-L297).

  And the debugger shows
  ```
  (gdb) bt
  #0  0x0000555556687c60 in QProgressDialog::wasCanceled() const ()
  #1  0x000055555572989f in WalletView::showProgress (this=0x5555577d7a70,
      title=..., nProgress=1) at qt/walletview.cpp:322
  ```

  Closes #17911.

ACKs for top commit:
  hebasto:
    ACK acf8abc7f3, I have reviewed the code and it looks OK, I agree it can be merged.
  elichai:
    utACK acf8abc7f3
  kristapsk:
    ACK acf8abc7f3
  MarcoFalke:
    ACK acf8abc7f3

Tree-SHA512: f5e6d873192d08d1a572e66e17c2e06d1ce27d01aa196b2a7ed591008641295bb02cda8ac90919ff2d2fc778316c2e143f8d36599e0d377779758853dfaf0a31
This commit is contained in:
fanquake 2020-02-06 14:31:23 +08:00
commit 23fab1a3df
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@ -66,7 +66,7 @@ private:
TransactionView *transactionView;
QProgressDialog *progressDialog;
QProgressDialog* progressDialog{nullptr};
const PlatformStyle *platformStyle;
public Q_SLOTS: