Make open_file() inline
MODIFY
include/afl-fuzz.h
include/afl-fuzz.h
@@ -945,7 +945,6 @@ void destroy_extras(afl_state_t *);
/* Stats */
-FILE *open_file(const char *);
void write_fuzzer_config_file(afl_state_t *);
void write_stats_file(afl_state_t *, double, double, double);
void maybe_update_plot_file(afl_state_t *, double, double);

MODIFY
src/afl-fuzz-stats.c
src/afl-fuzz-stats.c
/* Open file for writing */
-FILE *open_file(const char *fn) {
+inline FILE *open_file(const char *fn) {
s32 fd;
FILE *f;

Make open_file() inline