diff -ur orig/components/protocol.js new/components/protocol.js
--- orig/components/protocol.js	2016-01-26 06:55:36.000000000 +0000
+++ new/components/protocol.js	2022-06-30 10:16:31.000000000 +0100
@@ -1252,7 +1252,7 @@
 		this.sendRequest();
 		this._pump = Cc["@mozilla.org/network/input-stream-pump;1"].
 			createInstance(Ci.nsIInputStreamPump);
-		this._pump.init(sinput, -1, -1, 0, 0, true);
+		this._pump.init(sinput, 0, 0, true);
 		this._pump.asyncRead(this, null);
 		if (this._loadGroup) {
 			this._loadGroup.addRequest(this, null);