Fix the mc.ext.ini parser

sdn-mc-ext.cpp

@@ -45,14 +45,13 @@ unordered_map<string, unordered_map<string, string>> sections;
 fun expand_command (string command) -> pair<string, string> {
 	regex re_sequence {R"(%(%|[[:alpha:]]*\{([^}]*)\}|[[:alpha:]]+))"};
 	regex re_name {R"([^{}]*)"};
-	regex re_parameter {R"([^,]+")"};
+	regex re_parameter {R"([^,]+)"};
 	string kind, out, pipe; smatch m;
 	while (regex_search (command, m, re_sequence)) {
 		out.append (m.prefix ());
-		auto seq = m.str (1);
+		auto seq = m.str (1), argument = m.str (2);
 		command = m.suffix ();
 
-		string argument = m.str (2);
 		if (regex_search (seq, m, re_name))
 			seq = m.str ();