Avoid error log for deleteRootAndMultipartDocs function

[suvi-123]

No description provided.

[codecov]

Codecov Report

Merging #183 (11fcb4b) into master (ad1fe34) will decrease coverage by 0.02%.
Report is 9 commits behind head on master.
The diff coverage is 4.54%.

@@            Coverage Diff             @@
##           master     #183      +/-   ##
==========================================
- Coverage   49.10%   49.09%   -0.02%     
==========================================
  Files          29       29              
  Lines        8025     8023       -2     
==========================================
- Hits         3941     3939       -2     
  Misses       4084     4084              

Files	Coverage Δ
tests/test_multipart_unittest.c	93.38% <100.00%> (ø)
src/webcfg_multipart.c	36.08% <50.00%> (-0.11%)	⬇️
tests/test_db.c	48.14% <0.00%> (ø)
tests/test_webcfgdb.c	85.39% <0.00%> (ø)
tests/webcfgCli.c	0.00% <0.00%> (ø)