printf type field e fails for large numbers if both width and precision fields are defined

[jaakkor2]

On v0.6.4 printf works as expected

julia> @printf "%e" pi
3.141593e+00
julia> @printf "%e" pi*1e100
3.141593e+100
julia> @printf "%12.3e" pi
   3.142e+00
julia> @printf "%12.3e" pi*1e100
  3.142e+100

On v1.0.1 printf fails if both width and precision fields are defined and the number is large (>1e100)

julia> using Printf
julia> @printf "%e" pi
3.141593e+00
julia> @printf "%e" pi*1e100
3.141593e+100
julia> @printf "%12e" pi*1e100
3.141593e+100
julia> @printf "%.3e" pi*1e100
3.142e+100
julia> @printf "%12.3e" pi*1e100
ERROR: UndefVarError: SmallNumber not defined
Stacktrace:
 [1] top-level scope at .\printf.jl:477 [inlined]
 [2] top-level scope at .\none:0