Fix error message

[jedelbo]

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 jorgen.edelbo_261

Details

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• 49 unchanged lines in 15 files lost coverage.
• Overall coverage increased (+0.02%) to 90.804%

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Files with Coverage Reduction	New Missed Lines	%
src/realm/array_string.cpp	1	87.23%
src/realm/mixed.cpp	1	86.46%
test/test_index_string.cpp	1	93.48%
src/realm/array_blobs_big.cpp	2	98.58%
src/realm/array_key.cpp	2	96.55%
src/realm/sync/network/http.hpp	2	82.27%
test/fuzz_group.cpp	2	45.77%
src/realm/table.cpp	3	90.14%
src/realm/link_translator.cpp	4	76.92%
src/realm/sync/instruction_applier.cpp	4	68.08%

Totals
Change from base Build 2323:	0.02%
Covered Lines:	214757
Relevant Lines:	236506

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💛 - Coveralls