tools/mm/page_owner_sort.c: fix TGID output when cull=tg is used

When using cull option with 'tg' flag, the fprintf is using pid instead
of tgid. It should use tgid instead.

Link: https://lkml.kernel.org/r/[email protected]
Fixes: 9c8a0a8 ("tools/vm/page_owner_sort.c: support for user-defined culling rules")
Signed-off-by: Steve Chou <[email protected]>
Cc: Jiajian Ye <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: ssychou

tools/mm/page_owner_sort.c

@@ -857,7 +857,7 @@ int main(int argc, char **argv)
 			if (cull & CULL_PID || filter & FILTER_PID)
 				fprintf(fout, ", PID %d", list[i].pid);
 			if (cull & CULL_TGID || filter & FILTER_TGID)
-				fprintf(fout, ", TGID %d", list[i].pid);
+				fprintf(fout, ", TGID %d", list[i].tgid);
 			if (cull & CULL_COMM || filter & FILTER_COMM)
 				fprintf(fout, ", task_comm_name: %s", list[i].comm);
 			if (cull & CULL_ALLOCATOR) {