Recursive symlink crashes spf

[anta40]

To Reproduce

1. Create a recursive symlink, e.g ln -s blahblah blahblah
2. Run spf, keep navigating until you found the directory
3. Then spf crashes...

panic: runtime error: invalid memory address or nil pointer dereference━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫1/3┣━┛┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
                                                                       [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x10d806d2a]

                                                                                                                                                 goroutine 125 [running
]:
  github.com/MHNightCat/superfile/internal.returnMetaData({{{0xc0000c8d88, 0x1, 0x1}, 0x8f, 0x0, 0x6}, {{0xc0001f8000, 0x7, 0x7}, 0x0}, ...})
                                                                                                                                                github.com/MHNightCat/s
uperfile/internal/function.go:288 +0x46a
                                        github.com/MHNightCat/superfile/internal.mainKey.func2()
                                                                                                        github.com/MHNightCat/superfile/internal/key_function.go:34 +0x
51
  created by github.com/MHNightCat/superfile/internal.mainKey in goroutine 1
                                                                                github.com/MHNightCat/superfile/internal/key_function.go:33 +0xa8a

Expected behavior
spf doesn't crash, unless the user decides to enter that directory. mc (Midnight Commander) does it.

System information (please complete the following information):

• macOS Monterey (x64) 12.7.4
• Superfile Version 1.1.2 (installed via Homebrew)

[yorukot]

@anta40 Hey, thanks for the report, I just fixed it: 6235c1d