[PATCH] Factor DataflowWorklist out of LiveVariables and UninitializedValues analyses

[Artyom Skrobov]

Hello,

 

LiveVariables and UninitializedValues analyses had slightly different
implementations of DataflowWorklist, both by Ted Kremenek in 2011.

 

The two variants of DataflowWorklist had similar (though not identical)
interfaces, and apparently both were used for similar purposes.

 

My patch is to factor this class out of those two analyses. No functional
change intended.

 

Is it OK?

 
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