Fixing flux BC z

tests/TestFluxBC.cpp

@@ -99,7 +99,7 @@ int main (int argc, char **argv)
 
 		//printf("kproc=%i \n",Dm.kproc);
 		if (pBC && Dm.kproc == 0){
-			din = ScaLBL_D3Q19_Flux_BC_z(f_even,f_odd,flux,Nx,Ny,Nz);
+		  din = ScaLBL_D3Q19_Flux_BC_z(ID, f_even,f_odd,flux,Nx,Ny,Nz);
 			printf("Computed inlet pressure: %f \n", din);
 			ScaLBL_D3Q19_Pressure_BC_z(f_even,f_odd,din,Nx,Ny,Nz);
 		}

tests/lbpm_color_macro_simulator.cpp

@@ -932,7 +932,7 @@ int main(int argc, char **argv)
           din=0.f;
           //dout=0.f;
           if (pBC && Dm.kproc == 0){
-             din = ScaLBL_D3Q19_Flux_BC_z(f_even,f_odd,flux,Nx,Ny,Nz);
+	    din = ScaLBL_D3Q19_Flux_BC_z(ID,f_even,f_odd,flux,Nx,Ny,Nz);
           }
           double tmpdin=din;
           MPI_Allreduce(&tmpdin,&din,1,MPI_DOUBLE,MPI_SUM,Dm.Comm);