Commit 52cb2edd authored by Ell's avatar Ell

Issue #4605 - Invalid abr brush crashes GIMP

When loading ABR brushes, error out on negative scan-line lengths,
instead of trying to allocate a huge buffer.  This entire code
could use a whole lot more unsignedness, but this should cover the
crash.
parent 782e209a
Pipeline #151110 passed with stages
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