diff -Nru pango1.0-1.30.0/debian/changelog pango1.0-1.30.0/debian/changelog
--- pango1.0-1.30.0/debian/changelog	2012-05-30 16:04:43.000000000 +0000
+++ pango1.0-1.30.0/debian/changelog	2012-06-14 22:16:05.000000000 +0000
@@ -1,3 +1,10 @@
+pango1.0 (1.30.0-0ubuntu3.1) precise-proposed; urgency=low
+
+  * debian/patches/git_memory_leak.patch:
+    - Fix memory leak (LP: #837145)
+
+ -- Robert Ancell <robert.ancell@canonical.com>  Fri, 15 Jun 2012 10:10:12 +1200
+
 pango1.0 (1.30.0-0ubuntu3) precise-proposed; urgency=low
 
   * debian/patches/git_thai_zero_width_spaces.patch:
diff -Nru pango1.0-1.30.0/debian/patches/git_memory_leak.patch pango1.0-1.30.0/debian/patches/git_memory_leak.patch
--- pango1.0-1.30.0/debian/patches/git_memory_leak.patch	1970-01-01 00:00:00.000000000 +0000
+++ pango1.0-1.30.0/debian/patches/git_memory_leak.patch	2012-06-14 22:16:05.000000000 +0000
@@ -0,0 +1,37 @@
+From dc54dda64344fe8f7c18ce1223351fa2d8740832 Mon Sep 17 00:00:00 2001
+From: Robert Ancell <robert.ancell@canonical.com>
+Date: Thu, 14 Jun 2012 12:24:04 +1200
+Subject: [PATCH] [opentype] Free mutex on hb_blob destruction
+
+---
+ pango/opentype/hb-blob.c    |    1 +
+ pango/opentype/hb-private.h |    1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/pango/opentype/hb-blob.c b/pango/opentype/hb-blob.c
+index 3e787fc..3e2f16c 100644
+--- a/pango/opentype/hb-blob.c
++++ b/pango/opentype/hb-blob.c
+@@ -174,6 +174,7 @@ hb_blob_destroy (hb_blob_t *blob)
+   HB_OBJECT_DO_DESTROY (blob);
+ 
+   _hb_blob_destroy_user_data (blob);
++  hb_mutex_free (blob->lock);
+ 
+   free (blob);
+ }
+diff --git a/pango/opentype/hb-private.h b/pango/opentype/hb-private.h
+index 2791b05..4523a1d 100644
+--- a/pango/opentype/hb-private.h
++++ b/pango/opentype/hb-private.h
+@@ -76,6 +76,7 @@ typedef GStaticMutex hb_mutex_t;
+ #define hb_mutex_lock(M)		g_static_mutex_lock (&M)
+ #define hb_mutex_trylock(M)		g_static_mutex_trylock (&M)
+ #define hb_mutex_unlock(M)		g_static_mutex_unlock (&M)
++#define hb_mutex_free(M)		g_static_mutex_free (&M)
+ 
+ #else
+ #error "Could not find any system to define platform macros, see hb-private.h"
+-- 
+1.7.10.4
+
diff -Nru pango1.0-1.30.0/debian/patches/series pango1.0-1.30.0/debian/patches/series
--- pango1.0-1.30.0/debian/patches/series	2012-05-30 16:01:44.000000000 +0000
+++ pango1.0-1.30.0/debian/patches/series	2012-06-14 22:16:05.000000000 +0000
@@ -2,3 +2,4 @@
 11_module-files-append-module-files-d.patch
 12_module-files-append-compat-module-files-d.patch
 git_thai_zero_width_spaces.patch
+git_memory_leak.patch