radare2:ia_fuzz: Negative-size-param in r_strbuf_append_n

Project: https://github.com/radare/radare2.git https://github.com/radareorg/radare2.git Detailed Report: https://oss-fuzz.com/testcase?key=5321723956232192 Project: radare2 Fuzzing Engine: libFuzzer Fuzz Target: iafuzz Job Type: libfuzzerasanradare2 Platform Id: linux Crash Type:...