Make test_asmjs.html run faster (no bug,r=me)

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extra : rebase_source : 22f32a01d39e1de3ae7e2a070ee1ea01dc4b9a75
Bug 870144 - don't assume non-definition argument has a name when reporting asm.js validation errors (r=terrence)

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extra : rebase_source : 7b7ecf87bcbe04618c17cc117b299b733957f088