crypto: add null checks for OPENSSL_INIT_new()

[ndossche]

Other calls in initialization code often already check for null pointers via CHECK_NOT_NULL(). Do the same here.

This was found with the help of a static-dynamic analyzer I'm working on.

[nodejs-github-bot]

Review requested:

• @nodejs/crypto
• @nodejs/startup

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.04%. Comparing base (0e8fb91) to head (f5100f8).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/crypto/crypto_util.cc	0.00%	0 Missing and 1 partial ⚠️
src/node.cc	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #63457      +/-   ##
==========================================
- Coverage   90.06%   90.04%   -0.03%     
==========================================
  Files         714      714              
  Lines      225918   225920       +2     
  Branches    42735    42733       -2     
==========================================
- Hits       203471   203421      -50     
- Misses      14232    14277      +45     
- Partials     8215     8222       +7     

Files with missing lines	Coverage Δ
src/crypto/crypto_util.cc	73.18% <0.00%> (-0.42%)	⬇️
src/node.cc	76.06% <0.00%> (-0.10%)	⬇️

... and 31 files with indirect coverage changes

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