#262 plot vs vector resulting a doubling the vector in display command

[Dietmar Warning]

The following simplified script shows the failure as described in the title:

display
numb : voltage, real, 1 long
t_indx2 : voltage, real, 20983 long
t_indx2 : voltage, real, 20983 long
time : time, real, 20983 long [default scale]
v_sqr#branch : current, real, 20983 long
vin : voltage, real, 20983 long

Without "vs t_indx2" Display Shows correct only once the vector.

---

plot vs vector results in doubling the vector in display command
v_sqr vin 0 dc 0 pulse( -1 1 2.50m 1u 1u 5m 10m)
.control
tran .1m 1.6383 0 .1m
let numb = length(vin)
let t_indx2 = vector(numb)
plot t_indx2 vs t_indx2
display
.endc
.end