Error::UnsupportedCertWithoutExtensions

[stepancheg]

Better error than BadDER when certificate is generated incorrectly.

I agree to license my contributions to each file under the terms given at the top of each file I changed.

[codecov]

Codecov Report

Merging #185 (1a75f73) into main (07306a6) will increase coverage by 0.29%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##             main     #185      +/-   ##
==========================================
+ Coverage   71.32%   71.62%   +0.29%     
==========================================
  Files          15       16       +1     
  Lines        1395     1399       +4     
==========================================
+ Hits          995     1002       +7     
+ Misses        400      397       -3     

Impacted Files	Coverage Δ
src/error.rs	86.66% <0.00%> (+20.00%)	⬆️
src/cert.rs	95.79% <100.00%> (ø)
tests/cert_without_extensions.rs	100.00% <100.00%> (ø)

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[stepancheg]

Renamed to MissingOrMalformedExtensions and removed peek.

[briansmith]

Thanks!