Need to copy in fluid_pp, since it is not present in the code

 on the GPU

Author: danieljvickers

src/simulation/m_ibm.fpp

@@ -1031,7 +1031,7 @@ contains
         forces = 0._wp
         torques = 0._wp
 
-        $:GPU_PARALLEL_LOOP(private='[ib_idx,fluid_idx, radial_vector,local_force_contribution,cell_volume,local_torque_contribution, dynamic_viscosity, viscous_stress_div, viscous_stress_div_1, viscous_stress_div_2, viscous_cross_1, viscous_cross_2, dx, dy, dz]', copy='[forces,torques]', copyin='[ib_markers,patch_ib]', collapse=3)
+        $:GPU_PARALLEL_LOOP(private='[ib_idx,fluid_idx, radial_vector,local_force_contribution,cell_volume,local_torque_contribution, dynamic_viscosity, viscous_stress_div, viscous_stress_div_1, viscous_stress_div_2, viscous_cross_1, viscous_cross_2, dx, dy, dz]', copy='[forces,torques,fluid_pp]', copyin='[ib_markers,patch_ib]', collapse=3)
         do i = 0, m
             do j = 0, n
                 do k = 0, p