message: Add printf attribute checking to ya_getopt_error
diff: #include <stdlib.h>
  #include <string.h>
  #include "ya_getopt.h"
  +#include "gpuvis_macros.h"
  char *ya_optarg = NULL;
  int ya_optind = 1;
  @@ -50,6 +51,7 @@ static int ya_getopt_internal(int argc, char * const argv[], const char *optstri
  static int ya_getopt_shortopts(int argc, char * const argv[], const char *optstring, int long_only);
  static int ya_getopt_longopts(int argc, char * const argv[], char *arg, const char *optstring, const struct option *longopts, int *longindex, int *long_only_flag);
  +static void ya_getopt_error(const char *optstring, const char *format, ...) ATTRIBUTE_PRINTF(2, 3);
  static void ya_getopt_error(const char *optstring, const char *format, ...)
  {
  if (ya_opterr && optstring[0] != ':') {
  