LittleDict{Symbol,Int}(:x=>1) throws error

[ablaom]

# work fine:
LittleDict(:x=>1)
Dict{Symbol,Int}(:x=>1)

# throws error:
LittleDict{Symbol,Int}(:x=>1)
ERROR: ArgumentError: LittleDict(kv): kv needs to be an iterator of tuples or pairs
Stacktrace:
 [1] LittleDict{Symbol,Int64,KS,VS} where VS<:(Union{#s14, #s13} where #s13<:(Array{T,1} where T) where #s14<:Tuple) where KS<:(Union{#s14, #s13} where #s13<:(Array{T,1} where T) where #s14<:Tuple)(::Pair{Symbol,Int64}) at /Users/anthony/.julia/packages/OrderedCollections/E21Rb/src/little_dict.jl:58
 [2] top-level scope at REPL[25]:1

[oxinabox]

Yeah seems like a bug, since Dict accepts that form