proj4/standard_fuzzer: Crash in reverse_4d

Detailed report: https://oss-fuzz.com/testcase?key=6162480330964992 Project: proj4 Fuzzer: libFuzzerproj4standardfuzzer Fuzz target binary: standardfuzzer Job Type: libfuzzerasanproj4 Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x7fbe21623158 Crash State: reverse4d pjinv4d projtra...