Proper enrichFromCache panic fix and go-whisper upgrade

[deniszh]

• proper fix for enrichFromCache panic. Extending array with 0, tried NaN but it's immediately failing during marshalling, obviously.
• upgrading go-whisper to include buffer merge fix.

[deniszh]

Not sure why linter doing this... I see 0 issues running it locally:

± golangci-lint run --verbose --enable gofmt,goimports,gocritic --disable errcheck ./...
INFO [config_reader] Config search paths: [./  /]
INFO [lintersdb] Active 11 linters: [deadcode gocritic gofmt goimports gosimple govet ineffassign staticcheck typecheck unused varcheck]
INFO [loader] Go packages loading at mode 575 (compiled_files|deps|files|imports|exports_file|name|types_sizes) took 658.273375ms
INFO [runner/filename_unadjuster] Pre-built 0 adjustments in 9.986167ms
INFO [linters context/goanalysis] analyzers took 0s with no stages
INFO [runner] Issues before processing: 44, after processing: 0
INFO [runner] Processors filtering stat (out/in): autogenerated_exclude: 23/44, cgo: 44/44, filename_unadjuster: 44/44, path_prettifier: 44/44, skip_files: 44/44, identifier_marker: 23/23, exclude: 23/23, nolint: 0/23, skip_dirs: 44/44, exclude-rules: 23/23
INFO [runner] processing took 11.02004ms with stages: nolint: 9.110417ms, autogenerated_exclude: 701.25µs, exclude-rules: 698.958µs, identifier_marker: 265.957µs, path_prettifier: 188.416µs, skip_dirs: 45.875µs, cgo: 4.542µs, filename_unadjuster: 1.999µs, max_same_issues: 749ns, exclude: 292ns, severity-rules: 251ns, max_per_file_from_linter: 251ns, max_from_linter: 250ns, uniq_by_line: 208ns, diff: 166ns, path_shortener: 125ns, source_code: 125ns, skip_files: 84ns, sort_results: 84ns, path_prefixer: 41ns
INFO [runner] linters took 184.110125ms with stages: goanalysis_metalinter: 173.043333ms
INFO File cache stats: 0 entries of total size 0B
INFO Memory: 10 samples, avg is 52.8MB, max is 52.8MB
INFO Execution took 861.176084ms

[bom-d-van]

hi, @deniszh in case the comment didn't reach you, the changes in go-whisper might have failed some of the unit test cases. more here: go-graphite/go-whisper#35 (comment)

[emadolsky]

How about keeping the defensive code just in case?
This way, a bug or invalid data in the cache (like ts older than r.StartTime) will not cause a panic.
But I'm not well aware of the code as a whole. So your call.

[deniszh]

Well, it will not hurt, so let's keep it.

[deniszh]

@bom-d-van : Thanks, it's fixed now!