Fix cl_movespeedkey multiplied twice

cl_dll/input_xash3d.cpp

@@ -221,7 +221,7 @@ void IN_Move( float frametime, usercmd_t *cmd )
 		IN_ToggleButtons( ac_forwardmove / ac_movecount, ac_sidemove / ac_movecount );
 		if( ac_forwardmove ) cmd->forwardmove  = ac_forwardmove * cl_forwardspeed->value / ac_movecount;
 		if( ac_sidemove ) cmd->sidemove  = ac_sidemove * cl_sidespeed->value / ac_movecount;
-		if (in_speed.state & 1)
+		if( (in_speed.state & 1) && ( ac_sidemove || ac_forwardmove ) )
 		{
 			cmd->forwardmove *= cl_movespeedkey->value;
 			cmd->sidemove *= cl_movespeedkey->value;