#24 loop if no V2 tag and saving one

[Jan van Oosterom]

If file does not have a V2 Tag saving one results in loop.

Since the variable "writtenTagSize", in ID3v2TAG is 0
if there is no v2 tag and this variable is used in a
loop to increase the size of the header until it is big
enough this results in a indefinite loop.

The loop is in method getUpdatedPadding()

while (newTagSize < size) {
newTagSize += writtenTagSize;
}

and writtenTagSize is zero ....

fix:
if (writtenTagSize <=0) .....

[Ryan W Sims]

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I've just recently been playing around with this library and
ran into this problem, just did this:
if(writtenTagSize <=0) { writtenTagSize=2;}
arbitrarily.

[Ron Smits]

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Hmmz do not play with writtenTagSize as it is a calculated
value from the file itself.

Play with newTagSize so other routines that decide based on
writtenTagSize have the correct information