ruby:fuzz_ruby_gems: Use-after-poison in rb_fstring

Detailed Report: https://oss-fuzz.com/testcase?key=5922767461810176 Project: ruby Fuzzing Engine: honggfuzz Fuzz Target: fuzzrubygems Job Type: honggfuzzasanruby Platform Id: linux Crash Type: Use-after-poison READ 8 Crash Address: 0x7fffdb36a140 Crash State: rbfstring requireinternal rbfrequire...