SundialsIntegrator: Fix memory deallocation

nv_many_array is allocated with new[]. So it must be deallocated with
delete[]. Therefore we cannot call Sundials's N_VDestroyVectorArray that
uses std::free.

Src/Extern/SUNDIALS/AMReX_SundialsIntegrator.H

@@ -342,7 +342,10 @@ public:
  }
 
  // Clean up allocated memory
- N_VDestroyVectorArray(nv_many_arr, NVar);
+ for (int i = 0; i < Nvar; ++i) {
+ N_VDestroy(nv_many_arr[i]);
+ }
+ delete[] nv_many_arr;
  N_VDestroy(nv_S);
  N_VDestroy(nv_stage_data);
 
@@ -623,7 +626,10 @@ public:
  }
 
  // Clean up allocated memory
- N_VDestroyVectorArray(nv_many_arr, NVar);
+ for (int i = 0; i < Nvar; ++i) {
+ N_VDestroy(nv_many_arr[i]);
+ }
+ delete[] nv_many_arr;
  N_VDestroy(nv_S);
  N_VDestroy(nv_stage_data);