engine: fix predicting oldbuttons

engine/client/cl_pmove.c

@@ -1048,7 +1048,7 @@ void CL_FinishPMove( playermove_t *pmove, local_state_t *to )
 	VectorCopy( pmove->angles, ps->angles );
 	VectorCopy( pmove->basevelocity, ps->basevelocity );
 	VectorCopy( pmove->punchangle, cd->punchangle );
-	ps->oldbuttons = pmove->oldbuttons;
+	ps->oldbuttons = pmove->cmd.buttons;
 	ps->friction = pmove->friction;
 	ps->movetype = pmove->movetype;
 	ps->onground = pmove->onground;

engine/server/sv_pmove.c

@@ -753,7 +753,7 @@ static void SV_FinishPMove( playermove_t *pmove, sv_client_t *cl )
 	VectorCopy( pmove->movedir, clent->v.movedir );
 	clent->v.flTimeStepSound = pmove->flTimeStepSound;
 	clent->v.flFallVelocity = pmove->flFallVelocity;
-	clent->v.oldbuttons = pmove->oldbuttons;
+	clent->v.oldbuttons = pmove->cmd.buttons;
 	clent->v.waterlevel = pmove->waterlevel;
 	clent->v.watertype = pmove->watertype;
 	clent->v.maxspeed = pmove->clientmaxspeed;