SIGSEGV with Tao beam dump_at

[ChristopherMayes]

This example has a superimposed marker. When beam dump_at = * Tao will crash.

With files in the attached zip:

tao
[MESSAGE | 2024-JUN-28 10:50:29] tao_init:
    OpenMP active with number of threads: 10
[MESSAGE | 2024-JUN-28 10:50:29] bmad_parser:
    Lattice parse time(min): 0.00

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:
#0  0x106d56ed3
#1  0x106d5617b
#2  0x195287583
#3  0x102fa2eef
[1]    3982 segmentation fault  tao

error.zip

[DavidSagan]

Fixed.