Nesting of imperative ifelse inside dynamo

[PoorvaGarg]

The following code

earthquake = flip(0.5)

alarm = @dice begin
    if (burglary)
        (if (earthquake) 
            flip(0.95)
        else
            flip(0.1)
        end)
    else
        flip(0.01)
    end
end

throws the following error:

ERROR: Error compiling @dynamo Dice.DiceDyna on (var"#11#12",):
AssertionError: length(branches(bl)) == 2
Stacktrace:
  [1] functionalbranches!(bl::Any, pr::Any, labels::Any)
    @ IRTools.Inner ~/.julia/packages/IRTools/WiQqY/src/passes/cps.jl:36
  [2] _functional(ir::Any, tree::Any, vars::Any, cs::Any)
    @ IRTools.Inner ~/.julia/packages/IRTools/WiQqY/src/passes/cps.jl:66
  [3] _functional(ir::Any, tree::Any)
    @ IRTools.Inner ~/.julia/packages/IRTools/WiQqY/src/passes/cps.jl:50
  [4] functional(ir::Any)
    @ IRTools.Inner ~/.julia/packages/IRTools/WiQqY/src/passes/cps.jl:70
  [5] macro expansion
    @ ~/.julia/dev/Dice.jl/src/dsl.jl:53 [inlined]
  [6] macro expansion
    @ ./timing.jl:463 [inlined]
  [7] macro expansion
    @ ~/.julia/dev/Dice.jl/src/dsl.jl:50 [inlined]
  [8] transform(#unused#::Type{Dice.DiceDyna}, a::Type)
    @ Dice ~/.julia/packages/IRTools/WiQqY/src/reflection/dynamo.jl:137
  [9] dynamo(cache::Any, f::Any, args::Any)
    @ IRTools.Inner ~/.julia/packages/IRTools/WiQqY/src/reflection/dynamo.jl:76
 [10] #s61#154
    @ ~/.julia/packages/IRTools/WiQqY/src/reflection/dynamo.jl:129 [inlined]
 [11] var"#s61#154"(dyna::Any, args::Any)
    @ Dice ./none:0
 [12] (::Core.GeneratedFunctionStub)(::Any, ::Vararg{Any})
    @ Core ./boot.jl:582
 [13] dice(f::Function)
    @ Dice ~/.julia/dev/Dice.jl/src/dsl.jl:20
 [14] top-level scope
    @ ~/.julia/dev/Dice.jl/src/dsl.jl:27

[guyvdbroeck]

Same bug as FluxML/IRTools.jl#100