Fix compilation of scheduler on Android

[kneth]

What, How & Why?

☑️ ToDos

• 📝 Changelog update
• 🚦 Tests (or not relevant)
• C-API, if public C++ API changed
• bindgen/spec.yml, if public C++ API changed

[coveralls-official]

Pull Request Test Coverage Report for Build kenneth.geisshirt_15

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 73 unchanged lines in 16 files lost coverage.
• Overall coverage increased (+0.009%) to 90.829%

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Files with Coverage Reduction	New Missed Lines	%
src/realm/array_mixed.cpp	1	91.91%
src/realm/sync/noinst/changeset_index.cpp	1	79.47%
src/realm/util/serializer.cpp	1	90.43%
test/fuzz_tester.hpp	1	57.73%
test/test_util_network_ssl.cpp	1	89.59%
src/realm/object-store/shared_realm.cpp	2	91.89%
src/realm/array_string.cpp	3	87.5%
src/realm/table.cpp	3	90.14%
src/realm/sync/noinst/client_impl_base.cpp	4	82.64%
src/realm/sync/noinst/server/server.cpp	4	74.07%

Totals
Change from base Build 2339:	0.009%
Covered Lines:	214671
Relevant Lines:	236346

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💛 - Coveralls