Small fix to Nikyta's diagnostics because of new code changes

src/mhd/DirectInduction/mhd_iact.h

@@ -538,8 +538,7 @@ __attribute__((always_inline)) INLINE static void runner_iact_mhd_force(
   pi->mhd_data.u_dt_AR -= 0.5f * mj * permeability_inv * art_diff_pref_i * dB_2;
   pj->mhd_data.u_dt_AR -= 0.5f * mi * permeability_inv * art_diff_pref_j * dB_2;
 
-  /*Divergence diffusion */
-
+  /* Divergence diffusion */
   const float vsig_Dedner_i = 0.5f * pi->viscosity.v_sig;
   const float vsig_Dedner_j = 0.5f * pj->viscosity.v_sig;
 
@@ -555,7 +554,6 @@ __attribute__((always_inline)) INLINE static void runner_iact_mhd_force(
   pj->mhd_data.B_over_rho_dt[2] += mi * grad_psi * dx[2];
 
   /* Save induction sources */
-
   const float dB_dt_pref_Lap_i = 2.0f * r_inv / rhoj;
   const float dB_dt_pref_Lap_j = 2.0f * r_inv / rhoi;
 
@@ -564,8 +562,8 @@ __attribute__((always_inline)) INLINE static void runner_iact_mhd_force(
     pj->mhd_data.Adv_B_source[i] += mi * dB_dt_pref_j * dB_dt_j[i];
     pi->mhd_data.Adv_B_source[i] -= mj * grad_psi * dx[i];
     pj->mhd_data.Adv_B_source[i] += mi * grad_psi * dx[i];
-    pi->mhd_data.Diff_B_source[i] += mj * dB_dt_pref_PR_i * wi_dr * dB[i];
-    pj->mhd_data.Diff_B_source[i] -= mi * dB_dt_pref_PR_j * wj_dr * dB[i];
+    pi->mhd_data.Diff_B_source[i] += mj * resistive_eta_i * mj * dB_dt_pref_PR * dB[i];
+    pj->mhd_data.Diff_B_source[i] -= mi * resistive_eta_j * mi * dB_dt_pref_PR * dB[i];
     pi->mhd_data.Diff_B_source[i] += mj * art_diff_pref_i* dB[i];
     pj->mhd_data.Diff_B_source[i] -= mi * art_diff_pref_j * dB[i];
     pi->mhd_data.Delta_B[i] += mj * dB_dt_pref_Lap_i * wi_dr * dB[i];
@@ -806,7 +804,6 @@ __attribute__((always_inline)) INLINE static void runner_iact_nonsym_mhd_force(
   pi->mhd_data.u_dt_AR -= 0.5f * mj * permeability_inv * art_diff_pref * dB_2;
 
   /* Divergence diffusion */
-
   const float vsig_Dedner_i = 0.5f * pi->viscosity.v_sig;
   const float vsig_Dedner_j = 0.5f * pj->viscosity.v_sig;
 
@@ -823,7 +820,7 @@ __attribute__((always_inline)) INLINE static void runner_iact_nonsym_mhd_force(
   for (int i = 0; i < 3; i++) {
     pi->mhd_data.Adv_B_source[i] += mj * dB_dt_pref_i * dB_dt_i[i];
     pi->mhd_data.Adv_B_source[i] -= mj * grad_psi * dx[i];
-    pi->mhd_data.Diff_B_source[i] += mj * dB_dt_pref_PR * wi_dr * dB[i];
+    pi->mhd_data.Diff_B_source[i] += resistive_eta_i * mj * dB_dt_pref_PR * dB[i];
     pi->mhd_data.Diff_B_source[i] += mj * art_diff_pref * dB[i];
     pi->mhd_data.Delta_B[i] += mj * dB_dt_pref_Lap * wi_dr * dB[i];
   }