:isa main fails, maybe symbol order

```
[0x56434c8b463d]> :isa r_main_radare2
0x7f3cad14b5e9
[0x56434c8b463d]> :isa main
0x0
[0x56434c8b463d]> :is | grep main
0x56434c8b44c9 f r_main_r2pipe
0x0 f r_main_radare2
0x0 f __libc_start_main@GLIBC_2.34
0x56434c8b463d f main
[0x56434c8b463d]> 

```