Replace wherever possible '.reset(new' with '= make_unique' (#1429)

* replace wherever possible .reset(new with = make_unique

* fixed bug

* fixed bug

* revert WarpXOpenPMD.cpp to the original version

* removed another .reset(new

1 files changed, 8 insertions, 7 deletions

diff --git a/Source/Diagnostics/ComputeDiagFunctors/BackTransformFunctor.cpp b/Source/Diagnostics/ComputeDiagFunctors/BackTransformFunctor.cpp
index 298a74c2b..f38373862 100644
--- a/Source/Diagnostics/ComputeDiagFunctors/BackTransformFunctor.cpp
+++ b/Source/Diagnostics/ComputeDiagFunctors/BackTransformFunctor.cpp
@@ -1,7 +1,11 @@
 #include "BackTransformFunctor.H"
 #include "WarpX.H"
+
 #include <AMReX_MultiFabUtil.H>
 #include <AMReX_MultiFabUtil_C.H>
+
+#include <memory>
+
 using namespace amrex;
 
 BackTransformFunctor::BackTransformFunctor (amrex::MultiFab const * mf_src, int lev,
@@ -50,8 +54,8 @@ BackTransformFunctor::operator ()(amrex::MultiFab& mf_dst, int /*dcomp*/, const
         // Define MultiFab with the distribution map of the destination multifab and
         // containing all ten components that were in the slice generated from m_mf_src.
         std::unique_ptr< amrex::MultiFab > tmp_slice_ptr = nullptr;
-        tmp_slice_ptr.reset( new MultiFab ( slice_ba, mf_dst.DistributionMap(),
-                                            slice->nComp(), 0) );
+        tmp_slice_ptr = std::make_unique<MultiFab> ( slice_ba, mf_dst.DistributionMap(),
+                                            slice->nComp(), 0 );
         // Parallel copy the lab-frame data from "slice" MultiFab with
         // ncomp=10 and boosted-frame dmap to "tmp_slice_ptr" MultiFab with
         // ncomp=10 and dmap of the destination Multifab, which will store the final data
@@ -96,11 +100,8 @@ BackTransformFunctor::operator ()(amrex::MultiFab& mf_dst, int /*dcomp*/, const
         }
 
         // Reset the temporary MultiFabs generated
-        slice.reset(new MultiFab);
-        slice.reset(nullptr);
-        tmp_slice_ptr.reset(new MultiFab);
-        tmp_slice_ptr.reset(nullptr);
-
+        slice = nullptr;
+        tmp_slice_ptr = nullptr;
     }
 
 }