ha-bug-ignore-ill-formed-keen-data Call `#size` only when appropriate
These payloads are either `nil` or an Array, so `#to_a`
normalizes them
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4294.1AMD64JDK: oraclejdk7 Ruby: jruby-1.7.16GitJRUBY_OPTS="--dev -Xcext.enabled=false -Xcompile.invokedynamic=false -J-Xmx1g"
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4294.4AMD64JDK: oraclejdk7 Ruby: 2.0GitJRUBY_OPTS="--dev -Xcext.enabled=false -Xcompile.invokedynamic=false -J-Xmx1g"
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4294.5AMD64JDK: oraclejdk7 Ruby: 2.1GitJRUBY_OPTS="--dev -Xcext.enabled=false -Xcompile.invokedynamic=false -J-Xmx1g"