Fix charuco board detection bug #231

Job	Run time
cppcheck	42s
clang-tidy	2m 36s
clang-format-lint	13s
test-charuco-boards-generation	1m 13s
unit-tests-in-release-mode-opencv4100	5m 46s
code-coverage-testing	10m 57s
unit-tests-in-release-mode-opencv420	5m 41s
unit-tests-in-release-mode-opencv455	5m 27s
unit-tests-with-sanitizers	0s
unit-tests-with-valgrind	44m 4s
python-utils-linters	1m 1s
python-utils	41s
	1h 18m 21s

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