fix race condition by adding a mutex to HltRawBankDecoderBase

simple patch to avoid race condition discussed in Moore#438 (closed).
Only meant as a solution to enable the rate test until the proper fix in !3528 (merged) is ready.

cc @shunan @graven @nskidmor

added bug fix label

mentioned in issue Moore#438 (closed)

/ci-test

added ci-test-triggered label

added RTA label

• [2022-06-08 08:44] Validation started with lhcb-master-mr#4671
• [2022-06-08 11:33] Validation started with lhcb-master-mr#4672

Thank you so much for this @chasse! Its really appreciated :)

added 1 commit

• 15eabeef - fix race condition by adding a mutex to HltRawBankDecoderBase

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/ci-test

resolved all threads

merged

mentioned in commit 59216d67

mentioned in issue Moore#444 (closed)