Retain fd_log_wallclock ABI compatibility

Author: riptl

src/util/log/fd_log.c

@@ -358,13 +358,18 @@ fd_log_group_id_query( ulong group_id ) {
 /* WALLCLOCK APIS *****************************************************/
 
 long
-_fd_log_wallclock( void const * _ ) {
-  (void)_;
+fd_log_wallclock( void ) {
   struct timespec ts[1];
   clock_gettime( CLOCK_REALTIME, ts );
   return ((long)1e9)*((long)ts->tv_sec) + (long)ts->tv_nsec;
 }
 
+long
+_fd_log_wallclock( void const * _ ) {
+  (void)_;
+  return fd_log_wallclock();
+}
+
 char *
 fd_log_wallclock_cstr( long   now,
                        char * buf ) {

src/util/log/fd_log.h

@@ -508,7 +508,7 @@ extern ulong const fd_log_build_info_sz; /* == strlen( fd_log_build_info ) + 1UL
    involve system calls under the hood and is much slower than, say,
    RTSDC. */
 
-#define fd_log_wallclock() _fd_log_wallclock( NULL )
+long fd_log_wallclock( void );
 long _fd_log_wallclock( void const * _ ); /* fd_clock_func_t compat */
 
 /* fd_log_wallclock_cstr( t, buf ) pretty prints the wallclock