Fix resource leak on dir_topology, dir not being closed

Valgrind found the following leak:

==8065== 131,264 bytes in 4 blocks are definitely lost in loss record 11 of 11
==8065==    at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==8065==    by 0x4EF4C10: __alloc_dir (opendir.c:207)
==8065==    by 0x4053D2: topo_folder_scan (topology.c:308)
==8065==    by 0x405510: read_sysfs_cpu_topo (topology.c:344)
==8065==    by 0x404630: main (idlestat.c:1250)

dir_topology should be closed to stop this leak.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/topology.c b/topology.c
index d549e13..2b45adc 100644
--- a/topology.c
+++ b/topology.c
@@ -308,6 +308,7 @@ static int topo_folder_scan(char *path, folder_filter_t filter)
 			dir_topology = opendir(path);
 			if (!dir_topology)
 				continue;
+			closedir(dir_topology);
 
 			read_topology_cb(newpath, &cpu_info);
 			assert(sscanf(direntp->d_name, "cpu%d",