exporter started crashing with 0.11.0

[yuri1313]

hi,

Did an upgrade from 0.10.0 to 0.11.0 (running in k3s, but also tested with podman), and the image fails on startup with this error:
Works fine if I rollback the release to 0.10.0.

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x60 pc=0x7e106c]

goroutine 1 [running]:
github.com/prometheus/client_golang/prometheus.(*Registry).Register(0xc0000cc730, {0xa08890?, 0xc00029e690?})
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:291 +0x26c
github.com/prometheus/client_golang/prometheus.(*Registry).MustRegister(0xc0001a0680?, {0xc00029c890?, 0x1, 0x0?})
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:402 +0x53
github.com/prometheus/client_golang/prometheus.MustRegister(...)
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:178
github.com/charlie-haley/omada_exporter/cmd.run(0xc0001b4640?)
github.com/charlie-haley/omada_exporter@v0.11.0/cmd/exporter.go:93 +0x27d
github.com/urfave/cli/v2.(*App).RunContext(0xc000196340, {0xa0a868?, 0xc0000b4000}, {0xc00009e1f0, 0x1, 0x1})
github.com/urfave/cli/v2@v2.3.0/app.go:322 +0x97c
github.com/urfave/cli/v2.(*App).Run(...)
github.com/urfave/cli/v2@v2.3.0/app.go:224
github.com/charlie-haley/omada_exporter/cmd.Run()
github.com/charlie-haley/omada_exporter@v0.11.0/cmd/exporter.go:54 +0xb34
main.main()
github.com/charlie-haley/omada_exporter@v0.11.0/main.go:8 +0x17

[uzzitm]

i can confirm that version 0.11 gives an error
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x60 pc=0x7e106c]
goroutine 1 [running]:
github.com/prometheus/client_golang/prometheus.(*Registry).Register(0xc00006e780, {0xa08890?, 0xc0000b45f0?})
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:291 +0x26c
github.com/prometheus/client_golang/prometheus.(*Registry).MustRegister(0xc0000c6680?, {0xc00009d970?, 0x1, 0x0?})
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:402 +0x53
github.com/prometheus/client_golang/prometheus.MustRegister(...)
github.com/prometheus/client_golang@v1.9.0/prometheus/registry.go:178
github.com/charlie-haley/omada_exporter/cmd.run(0xc0000d2640?)
github.com/charlie-haley/omada_exporter@v0.11.0/cmd/exporter.go:93 +0x27d
github.com/urfave/cli/v2.(*App).RunContext(0xc000082680, {0xa0a868?, 0xc00002c040}, {0xc000022230, 0x1, 0x1})
github.com/urfave/cli/v2@v2.3.0/app.go:322 +0x97c
github.com/urfave/cli/v2.(*App).Run(...)
github.com/urfave/cli/v2@v2.3.0/app.go:224
github.com/charlie-haley/omada_exporter/cmd.Run()
github.com/charlie-haley/omada_exporter@v0.11.0/cmd/exporter.go:54 +0xb34
main.main()
github.com/charlie-haley/omada_exporter@v0.11.0/main.go:8 +0x17

[charlie-haley]

Should be fixed by #86, released in v0.11.1, I'll look at updating the test suite to catch stuff like this in the future!