cti config: fix nil deref

[mmetc]

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 27.52%. Comparing base (20e44cd) to head (76847d9).

Files	Patch %	Lines
cmd/crowdsec/serve.go	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3028      +/-   ##
==========================================
- Coverage   27.52%   27.52%   -0.01%     
==========================================
  Files         398      398              
  Lines       58148    58148              
==========================================
- Hits        16007    16003       -4     
- Misses      40195    40199       +4     
  Partials     1946     1946              

Flag	Coverage Δ
unit-linux	34.86% <0.00%> (-0.02%)	:arrow_down:
unit-windows	25.58% <0.00%> (-0.01%)	:arrow_down:

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