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Patch pulled from https://projects.archlinux.org/svntogit/community.git/tree/trunk?h=packages/powertop&id=37469c47b885c50365f57044e4ad72e0e3512b91

Fixes a use-after-close bug in create_all_devfreq_devices().

Signed-off-by: Steven Noonan <steven@uplinklabs.net>

--- a/src/devices/devfreq.cpp
+++ b/src/devices/devfreq.cpp
@@ -247,6 +247,7 @@ void create_all_devfreq_devices(void)
		fprintf(stderr, "Devfreq not enabled\n");
		is_enabled = false;
		closedir(dir);
+		dir = NULL;
		return;
	}