Fix env vars + erasing password in-memory

[LeChatP]

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[codecov]

Codecov Report

Attention: Patch coverage is 73.07307% with 269 lines in your changes are missing coverage. Please review.

Project coverage is 66.03%. Comparing base (334c539) to head (b16dbec).
Report is 3 commits behind head on main.

❗ Current head b16dbec differs from pull request most recent head 3439f1a

Please upload reports for the commit 3439f1a to get more accurate results.

Files	Patch %	Lines
src/chsr/cli/process/json.rs	83.40%	75 Missing ⚠️
src/sr/pam/mod.rs	0.00%	57 Missing ⚠️
src/chsr/cli/usage.rs	38.09%	39 Missing ⚠️
src/sr/pam/rpassword.rs	26.00%	37 Missing ⚠️
src/database/options.rs	63.51%	27 Missing ⚠️
src/chsr/cli/process.rs	80.95%	16 Missing ⚠️
src/sr/pam/cutils.rs	66.66%	9 Missing ⚠️
src/chsr/cli/pair.rs	95.00%	7 Missing ⚠️
src/sr/main.rs	50.00%	1 Missing ⚠️
src/sr/pam/securemem.rs	96.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #48      +/-   ##
==========================================
+ Coverage   56.10%   66.03%   +9.93%     
==========================================
  Files          18       27       +9     
  Lines        2918     2806     -112     
==========================================
+ Hits         1637     1853     +216     
+ Misses       1281      953     -328     

Flag	Coverage Δ
unittests	66.03% <73.07%> (+9.93%)	⬆️

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