Race condition in fuzz tests

[mmmds]

Fuzz tests clamav_dbload_fuzzer.cpp and clamav_scanfile_fuzzer.cpp create a fixed-name input file. If the tests are running in parallel mode, many threads are accessing the same file. Filenames should be unique per process to make parallel fuzzing effective.

clamav/fuzz/clamav_dbload_fuzzer.cpp

Line 120 in 0037f58

fuzzdb = fopen(kClamAVState.tmp_db_name, "w");

clamav/fuzz/clamav_scanfile_fuzzer.cpp

Line 122 in 0037f58

fuzzfile = fopen(kClamAVState.tmp_file_name, "w");