From a5e7d0a90fc13ee4b81128483931ccc3bf65d84c Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Wed, 22 Jan 2014 20:21:01 +0100
Subject: db/upnp: require an empty input capability set

---
 src/db/upnp/ContentDirectoryService.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/db/upnp/ContentDirectoryService.cxx b/src/db/upnp/ContentDirectoryService.cxx
index aea8144bf..d49a6b6fd 100644
--- a/src/db/upnp/ContentDirectoryService.cxx
+++ b/src/db/upnp/ContentDirectoryService.cxx
@@ -220,6 +220,8 @@ ContentDirectoryService::getSearchCapabilities(UpnpClient_Handle hdl,
 					       std::set<std::string> &result,
 					       Error &error)
 {
+	assert(result.empty());
+
 	IXML_Document *request =
 		UpnpMakeAction("GetSearchCapabilities", m_serviceType.c_str(),
 			       0,
@@ -244,7 +246,6 @@ ContentDirectoryService::getSearchCapabilities(UpnpClient_Handle hdl,
 	std::string tbuf = ixmlwrap::getFirstElementValue(response, "SearchCaps");
 	ixmlDocument_free(response);
 
-	result.clear();
 	if (!tbuf.compare("*")) {
 		result.insert(result.end(), "*");
 	} else if (!tbuf.empty()) {
-- 
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