Fix CVE-2016-5296: Heap-buffer-overflow WRITE in rasterize_edges_1
Adapted for upstream pixman based on:

  https://hg.mozilla.org/releases/mozilla-esr45/rev/5e39c1c2fded

--- pixman-0.34.0/pixman/pixman-edge-imp.h.orig	2015-06-30 05:48:31.000000000 -0400
+++ pixman-0.34.0/pixman/pixman-edge-imp.h	2016-11-16 01:09:34.046335106 -0500
@@ -55,8 +55,9 @@
 	 *
 	 * (The AA case does a similar  adjustment in RENDER_SAMPLES_X)
 	 */
-	lx += X_FRAC_FIRST(1) - pixman_fixed_e;
-	rx += X_FRAC_FIRST(1) - pixman_fixed_e;
+	/* we cast to unsigned to get defined behaviour for overflow */
+	lx = (unsigned)lx + X_FRAC_FIRST(1) - pixman_fixed_e;
+	rx = (unsigned)rx + X_FRAC_FIRST(1) - pixman_fixed_e;
 #endif
 	/* clip X */
 	if (lx < 0)
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<tr><td><span title='2022-02-19 01:05:09 +0100'>2022-02-19</span></td><td><a href='/guix/commit/gnu/packages/ebook.scm?id=81359197b43b3717b4c99dc9d3ea3d70db009782'>gnu: calibre: Improve package style.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/ebook.scm (calibre)[snippet]: Remove trailing #T.
[native-inputs]: Add BASH-MINIMAL. Re-order entries alphabetically.
[arguments]&lt;#:phases&gt;: Use G-expressions. Remove trailing #T.  Use
SEARCH-INPUT-FILE (or SEARCH-NATIVE-INPUT-FILE) instead of WHICH.  Use
THIS-PACKAGE-INPUT instead of ASSOC-REF.
</span></span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2022-02-19 00:11:04 +0100'>2022-02-19</span></td><td><a href='/guix/commit/gnu/packages/ebook.scm?id=c3aa92358f8a05c3dd6b0e78e3243661d046fa93'>gnu: calibre: Remove input labels.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/ebook.scm (calibre)[inputs]: Remove labels.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Brendan Tildesley</td></tr>
<tr><td><span title='2022-02-19 00:09:42 +0100'>2022-02-19</span></td><td><a href='/guix/commit/gnu/packages/ebook.scm?id=21fe2ad405412ffed4d602c414aa1aeebbeb1a44'>gnu: calibre: Update to 5.36.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/ebook.scm (calibre): Update to 5.36.0.
Remove no longer needed zeroconf patch.
[inputs]: Remove python-dbus, python-dukpy, python-pycryptodome. Add python-jeepney, libstemmer.
* gnu/packages/patches/calibre-fix-zeroconf.patch: Delete patch.
* gnu/local.mk: Remove reference to patch.

Signed-off-by: Nicolas Goaziou &lt;mail@nicolasgoaziou.fr&gt;
</span></span></td><td>Brendan Tildesley</td></tr>