StrictMode Closable not closed related to ImapStore

I'm seeing this Exception a lot in my logcat on CM12.1 with some connectivity Issues.

Seeing that #211 was handled, maybe it is of interest.
Thanks for maintaining k9!

10-23 16:25:02.246 23082 23104 E StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
10-23 16:25:02.246 23082 23104 E StrictMode: java.lang.Throwable: Explicit termination method 'end' not called
10-23 16:25:02.246 23082 23104 E StrictMode:    at dalvik.system.CloseGuard.open(CloseGuard.java:184)
10-23 16:25:02.246 23082 23104 E StrictMode:    at java.util.zip.Inflater.<init>(Inflater.java:82)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapConnection.open(ImapStore.java:2573)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapConnection.sendCommand(ImapStore.java:2872)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapConnection.executeSimpleCommand(ImapStore.java:2921)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapConnection.executeSimpleCommand(ImapStore.java:2902)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolder.executeSimpleCommand(ImapStore.java:858)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolder.internalOpen(ImapStore.java:904)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolder.open(ImapStore.java:867)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.controller.MessagingController.synchronizeMailboxSynchronous(MessagingController.java:1041)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.controller.MessagingController.access$400(MessagingController.java:111)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.controller.MessagingController$35.run(MessagingController.java:4506)
10-23 16:25:02.246 23082 23104 E StrictMode:    at com.fsck.k9.controller.MessagingController.run(MessagingController.java:435)
10-23 16:25:02.246 23082 23104 E StrictMode:    at java.lang.Thread.run(Thread.java:818)
10-23 16:25:02.249 23082 23104 E StrictMode: A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
10-23 16:25:02.249 23082 23104 E StrictMode: java.lang.Throwable: Explicit termination method 'end' not called
10-23 16:25:02.249 23082 23104 E StrictMode:    at dalvik.system.CloseGuard.open(CloseGuard.java:184)
10-23 16:25:02.249 23082 23104 E StrictMode:    at java.util.zip.Inflater.<init>(Inflater.java:82)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapConnection.open(ImapStore.java:2573)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolder.getPrefixedName(ImapStore.java:842)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolderPusher.getPrefixedName(ImapStore.java:2989)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolder.internalOpen(ImapStore.java:902)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolderPusher.internalOpen(ImapStore.java:2989)
10-23 16:25:02.249 23082 23104 E StrictMode:    at com.fsck.k9.mail.store.ImapStore$ImapFolderPusher$1.run(ImapStore.java:3068)
10-23 16:25:02.249 23082 23104 E StrictMode:    at java.lang.Thread.run(Thread.java:818)

Start by tracing ImapStore.java at ImapConnection.open(), sendCommand(), and ImapFolder.internalOpen(), using the reported StrictMode stack traces as the reproduction path. Investigate the connectivity-failure paths and verify that the Inflater-related resource is released so the reported StrictMode leak no longer appears.