NumberFormatException when creating ID3v1 tag from ID3v2 tag with textual genres

When I try to create an ID3v1 tag from an ID3v2 tag with a textual genre which has a hyphen in it, I get the following:

java.lang.NumberFormatException: For input string: "-"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.lang.Long.parseLong(Long.java:581)
        at java.lang.Long.parseLong(Long.java:631)
        at org.jaudiotagger.tag.id3.ID3Tags.findNumber(ID3Tags.java:405)
        at org.jaudiotagger.tag.id3.ID3Tags.findNumber(ID3Tags.java:359)
        at org.jaudiotagger.tag.id3.ID3v11Tag.&lt;init&gt;(ID3v11Tag.java:202)
        at org.jaudiotagger.tag.id3.ID3v1Tag.&lt;init&gt;(ID3v1Tag.java:167)

Looks like a bug in ID3Tags, see fix in pull request #47 .

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