Fix minor code defects #1980

Job	Run time
build-on-macos	3m 31s
build-test-api	6m 27s
build-by-clang	6m 32s
build-on-windows-x64-uwp-x86-shared	9m 25s
build-test-codecache	9m 5s
build-test-debugger	4m 53s
build-test-on-android (x86, 28)	22m 34s
build-test-on-android (x86_64, 28)	32m 47s
build-test-on-x64-release (new-es octane v8)	9m 16s
build-test-on-x64-release (new-es octane v8, -DESCARGOT_THREADING=ON -DESCARGOT_TCO=ON)	8m 22s
build-test-on-x64-release (chakracore spidermonkey)	8m 15s
build-test-on-x64-release (chakracore spidermonkey, -DESCARGOT_THREADING=ON -DESCARGOT_TCO=ON)	9m 43s
build-test-on-x64-release (chakracore spidermonkey, -DESCARGOT_SMALL_CONFIG=ON -DESCARGOT_USE_CUS...	8m 45s
build-test-on-x86-release (octane)	9m 12s
build-test-on-x86-release (v8 chakracore spidermonkey)	11m 50s
build-test-on-x86-release (jetstream-only-simple-parallel-1)	11m 50s
build-test-on-x86-release (jetstream-only-simple-parallel-2 jsc-stress)	9m 23s
build-test-on-x86-release (jetstream-only-simple-parallel-3 jetstream-only-cdjs)	9m 21s
build-test-on-x86-x64-debug	6m 23s
build-test-wasmjs	6m 10s
check-tidy	1m 14s
test-on-windows-clang-cl (x86, -m32)	10m 11s
test-on-windows-x86-x64 (x86)	41m 44s
test-on-windows-x86-x64 (x64)	40m 54s
	4h 57m 47s

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