dlplibs: Index-out-of-bounds in WKS4Chart::sendCharts

Detailed report: https://oss-fuzz.com/testcase?key=5151574194126848 Project: dlplibs Fuzzer: libFuzzerdlplibswksfuzzer Fuzz target binary: wksfuzzer Job Type: libfuzzerubsandlplibs Platform Id: linux Crash Type: Index-out-of-bounds Crash Address: Crash State: WKS4Chart::sendCharts WKS4Parser::par...