fix linter warnings #274

Job	Run time
Build linux pyd file (64-bit intel)	1m 20s
l10n	3s
Build 32 bit windows pyd file	3m 46s
Build 64 bit windows pyd file	3m 41s
zip up the rules directory	39s
build-addon	29s
Pre Release	20s
	10m 18s

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