Rustc 178 fixes 7013 v4

[catenacyber]

Link to redmine ticket: https://redmine.openinfosecfoundation.org/issues/7013

Describe changes:

• Fix build with rustc 1.78
• do not bother to free a null pointer in tests
• rust: return empty slice without using from_raw_parts fro StreamSlice
• protocol detection/probing : consistently check for NULL input (was done for half of the protocols)

#11041 with code review taken into account

• revert of temporary 14ab9aa763d44dda0f4c831047966b595f5630c1 cc @jasonish what was the purpose of this commit ?

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 77.41935% with 7 lines in your changes are missing coverage. Please review.

Project coverage is 83.62%. Comparing base (cb56752) to head (3d2b65e).

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11062      +/-   ##
==========================================
- Coverage   83.63%   83.62%   -0.02%     
==========================================
  Files         922      922              
  Lines      250321   250342      +21     
==========================================
- Hits       209349   209336      -13     
- Misses      40972    41006      +34     

Flag	Coverage Δ
fuzzcorpus	64.20% <74.19%> (-0.02%)	:arrow_down:
livemode	18.41% <0.00%> (-0.01%)	:arrow_down:
suricata-verify	62.73% <70.96%> (-0.03%)	:arrow_down:
unittests	62.26% <6.45%> (-0.01%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

[suricata-qa]

Information: QA ran without warnings.

Pipeline 20596

[jasonish]

revert of temporary 14ab9aa cc @jasonish what was the purpose of this commit ?

To revert back to previous rustc behavior to get it my PRs to pass qa.

[victorjulien]

Merged in #11084, thanks!