@bp doesn't work when it is the first line of the first function

[nacnudus]

Thank you for developing and maintaining this package.

This is a minor bug, as discussed on Discourse, but it bewildered me for a while.

using Debugger

function fun1()
  @bp
  print("I'm fun one.\n")
  fun2()
end

function fun2()
  @bp
  print("I'm fun, too.")
end

@run fun1()

Returns

julia> @run fun1()
I'm fun one.
Hit breakpoint:
In fun2() at REPL[34]:1
 1  function fun2()
●2    @bp
>3    print("I'm fun, too.")
 4  end

About to run: (print)("I'm fun, too.")

[pfitzseb]

Dup of #134.