Snippets for trace-cmd 3.3.1 from Alpine riscv64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-riscv64/testing/trace-cmd/trace-cmd-3.3.1-r1.log.

../tracecmd/trace-tsync.c:210:19: warning: 'guest' may be used uninitialized [-Wmaybe-uninitialized]
  210 |         if (!guest->instance)
      |              ~~~~~^~~~~~~~~~

../tracecmd/trace-sqlhist.c:37:12: warning: 'name' may be used uninitialized [-Wmaybe-uninitialized]
   37 |         if (!name)
      |            ^

../tracecmd/trace-sqlhist.c:34:32: warning: 'var' may be used uninitialized [-Wmaybe-uninitialized]
   34 |         if ((action & ACTIONS) && !var)
      |             ~~~~~~~~~~~~~~~~~~~^~~~~~~

../tracecmd/trace-vm.c:487:36: warning: 'guest' may be used uninitialized [-Wmaybe-uninitialized]
  487 |                         pid = guest->cpu_pid[i];
      |                               ~~~~~^~~~~~~~~

../tracecmd/trace-split.c:789:61: warning: 'prev_arg_idx' may be used uninitialized [-Wmaybe-uninitialized]
  789 |                         if (prev_arg_type != PREV_IS_BUFFER &&
      |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~
  790 |                             (prev_arg_idx != optind - 2))
      |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../tracecmd/trace-split.c:570:25: warning: 'count' may be used uninitialized [-Wmaybe-uninitialized]
  570 |                         parse_cpu(curr_handle, cpu_data, start,
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  571 |                                   end, count, percpu, -1, type, &curr_end_reached);
      |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../tracecmd/trace-listen.c:559:32: warning: 'pid' may be used uninitialized [-Wmaybe-uninitialized]
  559 |                 pid_array[cpu] = pid;
      |                 ~~~~~~~~~~~~~~~^~~~~

../tracecmd/trace-read.c:1962:13: warning: 'handle' may be used uninitialized [-Wmaybe-uninitialized]
 1962 |         if (tracecmd_get_flags(handle) & TRACECMD_FL_RAW_TS) {
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~

../tracecmd/trace-read.c:1282:65: warning: 'first_ts' may be used uninitialized [-Wmaybe-uninitialized]
 1282 |                         tracecmd_add_ts_offset(handles->handle, -first_ts);
      |                                                                 ^~~~~~~~~

../tracecmd/trace-read.c:1212:20: warning: 'ret' may be used uninitialized [-Wmaybe-uninitialized]
 1212 |                 if (ret > 0) {
      |                    ^

../tracecmd/trace-profile.c:1709:41: warning: 'ts_max' may be used uninitialized [-Wmaybe-uninitialized]
 1709 |                         chain[x].ts_max = ts_max;
      |                         ~~~~~~~~~~~~~~~~^~~~~~~~

../tracecmd/trace-profile.c:1707:41: warning: 'ts_min' may be used uninitialized [-Wmaybe-uninitialized]
 1707 |                         chain[x].ts_min = ts_min;
      |                         ~~~~~~~~~~~~~~~~^~~~~~~~

../tracecmd/trace-record.c:1625:40: warning: 'event' may be used uninitialized [-Wmaybe-uninitialized]
 1625 |                    (WIFSTOPPED(status) && event == PTRACE_EVENT_EXIT)) {
      |                    ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../tracecmd/trace-record.c:4213:31: warning: 'nr_fifos' may be used uninitialized [-Wmaybe-uninitialized]
 4213 |                 for (i = 0; i < nr_fifos; i++)
      |                             ~~^~~~~~~~~~