proj4/standard_fuzzer: Crash in nad_intr

Detailed report: https://oss-fuzz.com/testcase?key=5727785197764608 Project: proj4 Fuzzer: libFuzzerproj4standardfuzzer Fuzz target binary: standardfuzzer Job Type: libfuzzerubsanproj4 Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x0000000350c8 Crash State: nadintr nadcvt...