lib/expat/Parser: make the "is_final" argument optional

src/lib/expat/ExpatParser.hxx

@@ -72,7 +72,7 @@ public:
 		XML_SetCharacterDataHandler(parser, charhndl);
 	}
 
-	void Parse(const char *data, size_t length, bool is_final);
+	void Parse(const char *data, size_t length, bool is_final=false);
 
 	void CompleteParse() {
 		Parse("", 0, true);

src/lib/expat/StreamExpatParser.cxx

@@ -32,7 +32,7 @@ ExpatParser::Parse(InputStream &is)
 		if (nbytes == 0)
 			break;
 
-		Parse(buffer, nbytes, false);
+		Parse(buffer, nbytes);
 	}
 
 	CompleteParse();

src/storage/plugins/CurlStorage.cxx

@@ -300,7 +300,7 @@ private:
 
 	void OnData(ConstBuffer<void> _data) final {
 		const auto data = ConstBuffer<char>::FromVoid(_data);
-		Parse(data.data, data.size, false);
+		Parse(data.data, data.size);
 	}
 
 	void OnEnd() final {