Ronald S. Bultje 01cb62aba2 lcl: don't overwrite input memory. ...

If the PNG filter is enabled, a PNG-style filter will run over the
input buffer, writing into the buffer. Therefore, if no zlib compression
was used, ensure that we copy into a temporary buffer, otherwise we
overwrite user-provided input data.

2012-02-23 10:31:46 -08:00

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