--- /dev/null
+diff -up qtwebengine-everywhere-src-5.15.5/src/3rdparty/chromium/third_party/libxml/src/encoding.c.TRUE qtwebengine-everywhere-src-5.15.5/src/3rdparty/chromium/third_party/libxml/src/encoding.c
+--- qtwebengine-everywhere-src-5.15.5/src/3rdparty/chromium/third_party/libxml/src/encoding.c.TRUE 2021-05-28 07:05:45.000000000 -0500
++++ qtwebengine-everywhere-src-5.15.5/src/3rdparty/chromium/third_party/libxml/src/encoding.c 2021-06-24 09:44:41.592468805 -0500
+@@ -2004,7 +2004,7 @@ xmlEncOutputChunk(xmlCharEncodingHandler
+ #ifdef LIBXML_ICU_ENABLED
+ else if (handler->uconv_out != NULL) {
+ ret = xmlUconvWrapper(handler->uconv_out, 0, out, outlen, in, inlen,
+- TRUE);
++ 1);
+ }
+ #endif /* LIBXML_ICU_ENABLED */
+ else {