1 files changed, 4 insertions, 4 deletions
diff --git a/extern/mantaflow/preprocessed/plugin/waves.cpp b/extern/mantaflow/preprocessed/plugin/waves.cpp
index 7745dce4711..6fb3b16c742 100644
--- a/extern/mantaflow/preprocessed/plugin/waves.cpp
+++ b/extern/mantaflow/preprocessed/plugin/waves.cpp
@@ -101,7 +101,7 @@ static PyObject *_W_0(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
     FluidSolver *parent = _args.obtainParent();
     bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
     pbPreparePlugin(parent, "calcSecDeriv2d", !noTiming);
-    PyObject *_retval = 0;
+    PyObject *_retval = nullptr;
     {
       ArgLocker _lock;
       const Grid<Real> &v = *_args.getPtr<Grid<Real>>("v", 0, &_lock);
@@ -206,7 +206,7 @@ static PyObject *_W_1(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
     FluidSolver *parent = _args.obtainParent();
     bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
     pbPreparePlugin(parent, "totalSum", !noTiming);
-    PyObject *_retval = 0;
+    PyObject *_retval = nullptr;
     {
       ArgLocker _lock;
       Grid<Real> &height = *_args.getPtr<Grid<Real>>("height", 0, &_lock);
@@ -243,7 +243,7 @@ static PyObject *_W_2(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
     FluidSolver *parent = _args.obtainParent();
     bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
     pbPreparePlugin(parent, "normalizeSumTo", !noTiming);
-    PyObject *_retval = 0;
+    PyObject *_retval = nullptr;
     {
       ArgLocker _lock;
       Grid<Real> &height = *_args.getPtr<Grid<Real>>("height", 0, &_lock);
@@ -449,7 +449,7 @@ static PyObject *_W_3(PyObject *_self, PyObject *_linargs, PyObject *_kwds)
     FluidSolver *parent = _args.obtainParent();
     bool noTiming = _args.getOpt<bool>("notiming", -1, 0);
     pbPreparePlugin(parent, "cgSolveWE", !noTiming);
-    PyObject *_retval = 0;
+    PyObject *_retval = nullptr;
     {
       ArgLocker _lock;
       const FlagGrid &flags = *_args.getPtr<FlagGrid>("flags", 0, &_lock);