gdal/gdal_vrt_fuzzer: Heap-buffer-overflow in RIKRasterBand::IReadBlock

Project: https://github.com/OSGeo/gdal.git Detailed report: https://oss-fuzz.com/testcase?key=5318967280271360 Project: gdal Fuzzer: aflgdalvrtfuzzer Fuzz target binary: gdalvrtfuzzer Job Type: aflasangdal Platform Id: linux Crash Type: Heap-buffer-overflow READ 1 Crash Address: 0x60300000d344...