Fix pthread_t format warning for fprintf

This change fixes the following compilation build warning:

logger.c:117:47: warning: format '%li' expects argument of type 'long int', but argument 7 has type 'pthread_t' {aka 'struct __pthread *'} [-Wformat=]
  117 |                fprintf(log_fp, "%s %s %s[%d.%li]: %s\n", time_buf, hostname,
      |                                             ~~^
      |                                               |
      |                                               long int
  118 |                        log_ident, getpid(), pthread_self(), message);
      |                                             ~~~~~~~~~~~~~~
      |                                             |
      |                                             pthread_t {aka struct __pthread *}
logger.c:124:47: warning: format '%li' expects argument of type 'long int', but argument 7 has type 'pthread_t' {aka 'struct __pthread *'} [-Wformat=]
  124 |                fprintf(stderr, "%s %s %s[%d.%li]: %s\n", time_buf, hostname,
      |                                             ~~^
      |                                               |
      |                                               long int
  125 |                        log_ident, getpid(), pthread_self(), message);
      |                                             ~~~~~~~~~~~~~~
      |                                             |
      |                                             pthread_t {aka struct __pthread *}

Signed-off-by: Florian Eckert <[email protected]>

Author: feckert

logger.c

@@ -115,14 +115,14 @@ void logger(int severity, const char *fmt, ...)
           if (log_fp)
           {
                fprintf(log_fp, "%s %s %s[%d.%li]: %s\n", time_buf, hostname,
-                       log_ident, getpid(), pthread_self(), message);
+                       log_ident, getpid(), (unsigned long int) pthread_self(), message);
                fflush(log_fp);
           }
           else if (log_syslog_is_open)
                syslog(severity, "%s", message);
           else
                fprintf(stderr, "%s %s %s[%d.%li]: %s\n", time_buf, hostname,
-                       log_ident, getpid(), pthread_self(), message);
+                       log_ident, getpid(), (unsigned long int) pthread_self(), message);
      }
      va_end(args);
 }