[Tests] fix solve_stake nTime / nStakeModifier

…sRow

359f70e [GUI] Explicit cast from quint32 to bool in filterAcceptsRow (random-zebra)

Pull request description:

  This is a (hopefully definitive) fix for a strange segfault I was consistently having on testnet with the GUI wallet (during the loading of the stake charts), with the following stacktrace
  ```
  #0  0x00007ffff58363bb in  ()
      at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #1  0x00007ffff583b25d in  ()
      at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #2  0x00007ffff583b932 in  ()
      at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #3  0x00007ffff583bca9 in  ()
      at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #4  0x00007ffff583c50a in QSortFilterProxyModel::invalidateFilter() ()
      at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #5  0x00005555556aa809 in DashboardWidget::updateStakeFilter() (this=this@entry=0x5555577817d0) at qt/pivx/dashboardwidget.cpp:480
  #6  0x00005555556ac736 in DashboardWidget::getAmountBy() (this=this@entry=0x5555577817d0) at qt/pivx/dashboardwidget.cpp:503
  #7  0x00005555556ad1a1 in DashboardWidget::loadChartData(bool) (this=this@entry=0x5555577817d0, withMonthNames=false)
      at qt/pivx/dashboardwidget.cpp:556
  #8  0x00005555556ad703 in DashboardWidget::run(int) (this=0x5555577817d0, type=<optimized out>) at qt/pivx/dashboardwidget.cpp:812
  #9  0x00005555557641d4 in Worker::process() (this=0x5555576314c0)
      at qt/pivx/loadingdialog.cpp:12
  #10 0x00007ffff56932b2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #11 0x00007ffff569617d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #12 0x00007ffff4ae36db in start_thread (arg=0x7ffe61ffb700) at pthread_create.c:463
  #13 0x00007ffff2c9e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
  ```

  Explicit the cast to bool when checking the transaction type in `TransactionFilterProxy::filterAcceptsRow`.

ACKs for top commit:
  furszy:
    detective work 👍 , utACK 359f70e.
  Fuzzbawls:
    utACK 359f70e then

Tree-SHA512: f1481a0545fb1ebe62b28232f9257e6c52306ff15dd1dcefc29d4eeb3dd25b7231d48416cad528e720fb68aa192b089e14bfc8ee92e55406ea02fc777f552b15

98261b1e7b Merge PIVX-Project#22: Clamp JSON object depth to PHP limit
54c4015415 Clamp JSON object depth to PHP limit
5a58a46671 Merge PIVX-Project#21: Remove hand-coded UniValue destructor.
b4cdfc4f47 Remove hand-coded UniValue destructor.
7fba60b5ad Merge PIVX-Project#17: [docs] Update readme
4577454e7e Merge PIVX-Project#13: Fix typo
ac7e73cda8 [docs] Update readme
7890db99d6 Merge PIVX-Project#11: Remove deprecated std pair wrappers
40e34852ac Merge PIVX-Project#14: Cleaned up namespace imports to reduce symbol collisions
4a4964729b Fix typo
85052a4819 Remove deprecated std::pair wrappers
51d3ab34ba Merge PIVX-Project#10: Add pushKV(key, boolean) function (replaces PIVX-Project#5)
129bad96d5 [tests] test pushKV for boolean values
b3c44c947f Pushing boolean value to univalue correctly
07947ff2da Merge PIVX-Project#9: [tests] Fix BOOST_CHECK_THROW macro
ec849d9a28 [tests] Fix BOOST_CHECK_THROW macro
d208f986dd Cleaned up namespace imports to reduce symbol collisions
31bc9f5a49 Merge PIVX-Project#8: Remove unused Homebrew workaround
fa042093d1 Remove HomeBrew workaround
a523e08ae4 Merge PIVX-Project#7: Declare single-argument (non-converting) constructors "explicit"
a9e53b38ba Merge PIVX-Project#4: Pull upstream
fe805ea74f Declare single-argument (non-converting) constructors "explicit"
8a2d6f1e36 Merge pull request PIVX-Project#41 from jgarzik/get-obj-map
ba341a20d7 Add getObjMap() helper method.  Also, constify checkObject().
ceb1194137 Handle .pushKV() and .checkObject() edge cases.
107db98299 Add ::push_back(double) method for feature parity.
d415300316 Move one-line implementation of UniValue::read() to header.
52e85b35b8 Move exception-throwing get_* methods into separate implementation module.
16a1f7f6e9 Merge PIVX-Project#3: Pull upstream
daf1285af6 Merge pull request PIVX-Project#2 from jgarzik/master
f32df99e96 Merge branch '2016_04_unicode' into bitcoin
280b191cb1 Merge remote-tracking branch 'jgarzik/master' into bitcoin
2740c4f712 Merge branch '2015_11_escape_plan' into bitcoin

git-subtree-dir: src/univalue
git-subtree-split: 98261b1e7be4ce9820e25c8ce37d40cdef19ab20