rolling back trace pc guards
rolling back trace pc guards

fuzzers fail with:

=================================================================
[1m[31m==18057==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000000b8a144 at pc 0x0000007ae0ca bp 0x7fff2b91a4d0 sp 0x7fff2b91a4c8
[1m[0m[1m[34mWRITE of size 4 at 0x000000b8a144 thread T0[1m[0m
    #0 0x7ae0c9 in fuzzer::TracePC::HandleInit(unsigned int*, unsigned int*) /src/libfuzzer/FuzzerTracePC.cpp:49:8
    #1 0x7bcab9 in __sanitizer_cov_trace_pc_guard_init /src/libfuzzer/FuzzerTracePC.cpp:286:15
    #2 0x5156bf in sancov.module_ctor (/out/curl_fuzzer+0x5156bf)
    #3 0x88c1cc in __libc_csu_init (/out/curl_fuzzer+0x88c1cc)
    #4 0x7f4ab7aed7be in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x207be)
    #5 0x41fd78 in _start (/out/curl_fuzzer+0x41fd78)
robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,vitalybuka/oss-fuzz,vitalybuka/oss-fuzz,skia-dev/oss-fuzz,robertswiecki/oss-fuzz,robertswiecki/oss-fuzz,vitalybuka/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,googlefonts/oss-fuzz,skia-dev/oss-fuzz,google/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,oliverchang/oss-fuzz,robertswiecki/oss-fuzz,skia-dev/oss-fuzz,oliverchang/oss-fuzz,skia-dev/oss-fuzz,kcc/oss-fuzz,robertswiecki/oss-fuzz,ssbr/oss-fuzz,skia-dev/oss-fuzz,google/oss-fuzz,kcc/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz,google/oss-fuzz,vitalybuka/oss-fuzz,ssbr/oss-fuzz,google/oss-fuzz,FeliciaLim/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,skia-dev/oss-fuzz,googlefonts/oss-fuzz,kcc/oss-fuzz,robertswiecki/oss-fuzz,oliverchang/oss-fuzz,google/oss-fuzz,ssbr/oss-fuzz,FeliciaLim/oss-fuzz,FeliciaLim/oss-fuzz,robertswiecki/oss-fuzz,google/oss-fuzz,oliverchang/oss-fuzz,googlefonts/oss-fuzz,googlefonts/oss-fuzz,kcc/oss-fuzz,kcc/oss-fuzz,skia-dev/oss-fuzz,ssbr/oss-fuzz,FeliciaLim/oss-fuzz,robertswiecki/oss-fuzz,googlefonts/oss-fuzz,robertswiecki/oss-fuzz,google/oss-fuzz,google/oss-fuzz,oliverchang/oss-fuzz,ssbr/oss-fuzz,FeliciaLim/oss-fuzz,vitalybuka/oss-fuzz,googlefonts/oss-fuzz,google/oss-fuzz