bug#24358: 25.1.50; re-search-forward errors with "Variable binding depth exceeds max-specpdl-size"

[npostavs]

npostavs@users.sourceforge.net writes:
>
>> (I'm also on GNU/Linux, Arch) I get the same max-specpdl-size error with
>> 25.1.50, with 24.5 (and below) I get (error "Stack overflow in regexp
>> matcher")

icalendar--read-element has been fixed, but this still reproduces when
doing (re-search-forward ".*\\(\n.*\\)*" nil t) on the text file given
in the OP.  And I'm still seeing an assertion failure due to what looks
like memory corruption on the emacs-25 branch.