Fix building with Python 3.9:

https://github.com/qtwebkit/qtwebkit/issues/993

Patch copied from upstream source repository:

https://github.com/qtwebkit/qtwebkit/commit/78360c01c796b6260bf828bc9c8a0ef73c5132fd

From 78360c01c796b6260bf828bc9c8a0ef73c5132fd Mon Sep 17 00:00:00 2001
From: Konstantin Tokarev <annulen@yandex.ru>
Date: Wed, 3 Jun 2020 15:01:42 +0300
Subject: [PATCH] Fix compilation with Python 3.9: avoid passing encoding to
 json.load()

In Python 2.7 UTF-8 is assumed by default, while in Python 3 this argument
is not supported.

Change-Id: Ic459d60a6b20bc1838d8771bc36ac41614fe61a9
---
 Source/JavaScriptCore/generate-bytecode-files | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/JavaScriptCore/generate-bytecode-files b/Source/JavaScriptCore/generate-bytecode-files
index c5dab429c7b0f..af3431275ecf9 100644
--- a/Source/JavaScriptCore/generate-bytecode-files
+++ b/Source/JavaScriptCore/generate-bytecode-files
@@ -163,7 +163,7 @@ if __name__ == "__main__":
         initBytecodesFile = openOrExit(initASMFileName, "w")
 
     try:
-        bytecodeSections = json.load(bytecodeFile, encoding = "utf-8")
+        bytecodeSections = json.load(bytecodeFile)
     except:
         print("Unexpected error parsing {0}: {1}".format(bytecodeJSONFile, sys.exc_info()))
 
x/commit/gnu/packages/valgrind.scm?id=9834d1ab3836730cf3308603019b736d0a653013'>commit</a><a href='/guix/diff/gnu/packages/valgrind.scm?id=9834d1ab3836730cf3308603019b736d0a653013'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/valgrind.scm'>
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<div class='path'>path: <a href='/guix/log/?id=9834d1ab3836730cf3308603019b736d0a653013'>root</a>/<a href='/guix/log/gnu?id=9834d1ab3836730cf3308603019b736d0a653013'>gnu</a>/<a href='/guix/log/gnu/packages?id=9834d1ab3836730cf3308603019b736d0a653013'>packages</a>/<a href='/guix/log/gnu/packages/valgrind.scm?id=9834d1ab3836730cf3308603019b736d0a653013'>valgrind.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/valgrind.scm?id=9834d1ab3836730cf3308603019b736d0a653013&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-06-27 12:51:34 +0200'>2020-06-27</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=25ceae92ea6cddd2306fab9847ba091c17a0ae69'>gnu: valgrind: Update to 3.16.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind): Update to 3.16.1.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-06-27 12:29:24 +0200'>2020-06-27</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=b611597af8641b388dc9f8935b85895a71e9fb52'>gnu: valgrind: Don't depend on GDB.</a><span class='msg-avail'>...<span class='msg-tooltip'>...but add a special 'valgrind/interactive' variant for end users.

* gnu/packages/valgrind.scm (valgrind)[inputs]: Remove.
[properties]: New field.
(valgrind/interactive): New public variable.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-05-17 20:23:17 +0300'>2020-05-17</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=d74ea9e560d6419e6170991520c640483d21840b'>gnu: valgrind: Fix build on powerpc.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind)[arguments]: Add make-flags for
CPU optimizations when building on powerpc.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-04-28 22:33:40 +0300'>2020-04-28</span></td><td><a href='/guix/commit/gnu/packages/valgrind.scm?id=cd8c419722780765b075a7217b861e7608c0bac2'>gnu: valgrind: Update source uri.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/valgrind.scm (valgrind)[source]: Remove valgrind host,
add sourceware host.
[home-page]: Use https.
</span></span></td><td>Efraim Flashner</td></tr>