chakra: Crash in Js::RegexHelper::StringReplace

Project: https://github.com/Microsoft/ChakraCore.git Detailed report: https://oss-fuzz.com/testcase?key=6004443454636032 Project: chakra Fuzzer: jsfuzzer Job Type: asanchakra Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x7f9829583cc0 Crash State: Js::RegexHelper::StringReplace...