trace-cmd: Fix left open file descriptor in recording of date

From: "Steven Rostedt (VMware)" <[email protected]>

When running the --date option of trace-cmd record it loops through writing to the trace_marker and reading the timestamp from trace_pipe_raw. But it never closes the file descriptor it used to open trace_pipe_raw with. This prevents other parts of trace-cmd from working like writing "function" into current_tracer, because the trace_pipe_raw will hold a ref count and not let different tracers be set if that file is open.

---
 tracecmd/trace-record.c | 1 +
 1 file changed, 1 insertion(+)

index 038b2313..24580a40 100644
@@ -3421,6 +3421,7 @@ static unsigned long long find_time_stamp(struct tep_handle *pevent)
 			if (ts)
 				break;
 		} while (r > 0);
+		close(fd);
 		if (ts)
 			break;
 	}

2.19.2