angle:fuzz_spirv_transform: Crash in rx::ShaderInterfaceVariableInfoMap::add

Detailed Report: https://oss-fuzz.com/testcase?key=6479607042473984 Project: angle Fuzzing Engine: libFuzzer Fuzz Target: fuzzspirvtransform Job Type: libfuzzerasanangle Platform Id: linux Crash Type: UNKNOWN WRITE Crash Address: 0x7a214b3d0104 Crash State: rx::ShaderInterfaceVariableInfoMap::add...