From 6634a2a0a761b9969578f8e206110cf0da545887 Mon Sep 17 00:00:00 2001
From: Kevin Ballard <kevin.ballard@postmates.com>
Date: Thu, 17 Dec 2015 16:24:16 -0800
Subject: [PATCH] Don't forget to pthread_mutex_destroy()

This was a bit of an unfortunate omission. It meant we were leaking our
mutexes. Oops.
---
 PMKVObserver/KVObserver.m | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/PMKVObserver/KVObserver.m b/PMKVObserver/KVObserver.m
index b34227b..b05b360 100644
--- a/PMKVObserver/KVObserver.m
+++ b/PMKVObserver/KVObserver.m
@@ -110,6 +110,13 @@ - (instancetype)init {
     @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"-[PMKVObserver init] is not available" userInfo:nil];
 }
 
+- (void)dealloc {
+    int retval = pthread_mutex_destroy(&_mutex);
+    if (__builtin_expect(retval, 0) != 0) {
+        NSLog(@"PMKVObserver: pthread_mutex_destroy: %s", strerror(retval));
+    }
+}
+
 - (void)cancel {
     [self cancel:NO];
 }