fixed recent merge issue.

Source/Particles/Collision/BinaryCollision/Coulomb/ElasticCollisionPerez.H

@@ -32,7 +32,9 @@
  * @param[in] dt is the time step length between two collision calls.
  * @param[in] L is the Coulomb log and will be used if greater than zero,
  *            otherwise will be computed.
+ * @param[in] dV is the volume of the corresponding cell.
  * @param[in] engine the random number generator state & factory
+ * @param[in] isSameSpecies whether this is an intra-species collision process
  * @param[in] coll_idx is the collision index offset.
 */
 
@@ -50,7 +52,7 @@ void ElasticCollisionPerez (
     T_PR const  m1, T_PR const  m2,
     T_R const  dt, T_PR const  L, T_R const dV,
     amrex::RandomEngine const& engine,
-    T_index coll_idx)
+    bool const isSameSpecies, T_index coll_idx)
 {
     const T_index NI1 = I1e - I1s;
     const T_index NI2 = I2e - I2s;