perf daemon: Convert comma to semicolon

Replace a comma between expression statements by a semicolon.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240716074340.968909-1-nichen@iscas.ac.cnSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-daemon.c

@@ -1433,7 +1433,7 @@ static int __cmd_signal(struct daemon *daemon, struct option parent_options[],
 	}
 
 	memset(&cmd, 0, sizeof(cmd));
-	cmd.signal.cmd = CMD_SIGNAL,
+	cmd.signal.cmd = CMD_SIGNAL;
 	cmd.signal.sig = SIGUSR2;
 	strncpy(cmd.signal.name, name, sizeof(cmd.signal.name) - 1);