OOME when group matches empty string

[mschaefers]

The following code snippet leads to an endless loop in matcher.namedGroups() and eventually to an OutOfMemoryError:

com.google.code.regexp.Matcher matcher = com.google.code.regexp.Pattern.compile("(?<foo>.*)").matcher("bar");
System.out.println(matcher.namedGroups());

Tested with v0.2.6

I would expect that

1. the expression (?<foo>.*) matched the whole String bar once, because .* is greedy (as opposed to .*?)
2. no endless loop / OOME occurs, for any given pattern

[tony19]

Fixed in https://github.com/tony19/named-regexp/releases/tag/named-regexp-0.2.7