ovs-bugtool: Close file descriptors after use.

In ovs-bugtool, we do a bunch of Popen calls to
get the results of some shell commands with stdout
set to PIPE. Once we are done, we need to
close the file descriptors.

Bug #11083.
Signed-off-by: Gurucharan Shetty <gshetty@nicira.com>

diff --git a/utilities/bugtool/ovs-bugtool.in b/utilities/bugtool/ovs-bugtool.in
index 2df3e66..3daf9cc 100755 (executable)
--- a/utilities/bugtool/ovs-bugtool.in
+++ b/utilities/bugtool/ovs-bugtool.in
@@ -1175,6 +1175,7 @@ class ProcOutput:
     def terminate(self):
         if self.running:
             try:
+                self.proc.stdout.close()
                 os.kill(self.proc.pid, SIGTERM)
             except:
                 pass
@@ -1187,6 +1188,7 @@ class ProcOutput:
         line = self.proc.stdout.readline()
         if line == '':
             # process exited
+            self.proc.stdout.close()
             self.status = self.proc.wait()
             self.proc = None
             self.running = False