perf tools: Fix resources leak in perf_data__open_dir()

In perf_data__open_dir(), opendir() opens the directory stream.  Add
missing closedir() to release it after use.

Fixes: eb61767 ("perf data: Add perf_data__open_dir_data function")
Reviewed-by: Adrian Hunter <[email protected]>
Signed-off-by: Miaoqian Lin <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexey Bayduraev <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: Yuuoniy

tools/perf/util/data.c

@@ -132,6 +132,7 @@ int perf_data__open_dir(struct perf_data *data)
 		file->size = st.st_size;
 	}
 
+	closedir(dir);
 	if (!files)
 		return -EINVAL;
 
@@ -140,6 +141,7 @@ int perf_data__open_dir(struct perf_data *data)
 	return 0;
 
 out_err:
+	closedir(dir);
 	close_dir(files, nr);
 	return ret;
 }