lib/upnp/Util: pass single delimiter character to stringToTokens()

src/db/plugins/upnp/UpnpDatabasePlugin.cxx

@@ -180,7 +180,7 @@ UpnpDatabase::ReturnSong(const LightSong *_song) const
 const LightSong *
 UpnpDatabase::GetSong(const char *uri) const
 {
-	auto vpath = stringToTokens(uri, "/");
+	auto vpath = stringToTokens(uri, '/');
 	if (vpath.size() < 2)
 		throw DatabaseError(DatabaseErrorCode::NOT_FOUND,
 				    "No such song");
@@ -577,7 +577,7 @@ UpnpDatabase::Visit(const DatabaseSelection &selection,
 		    VisitSong visit_song,
 		    VisitPlaylist visit_playlist) const
 {
-	auto vpath = stringToTokens(selection.uri, "/");
+	auto vpath = stringToTokens(selection.uri, '/');
 	if (vpath.empty()) {
 		for (const auto &server : discovery->GetDirectories()) {
 			if (visit_directory) {

src/lib/upnp/Util.cxx

@@ -71,11 +71,11 @@ path_getfather(const std::string &s)
 
 std::list<std::string>
 stringToTokens(const std::string &str,
-	       const char *delims)
+	       const char delim)
 {
 	std::list<std::string> tokens;
 
-	std::string::size_type startPos = str.find_first_not_of(delims, 0);
+	std::string::size_type startPos = str.find_first_not_of(delim, 0);
 
 	// Skip initial delims, return empty if this eats all.
 	if (startPos == std::string::npos)
@@ -83,7 +83,7 @@ stringToTokens(const std::string &str,
 
 	while (startPos < str.size()) {
 		// Find next delimiter or end of string (end of token)
-		auto pos = str.find_first_of(delims, startPos);
+		auto pos = str.find_first_of(delim, startPos);
 
 		// Add token to the vector and adjust start
 		if (pos == std::string::npos) {

src/lib/upnp/Util.hxx

@@ -33,8 +33,7 @@ path_getfather(const std::string &s);
 
 gcc_pure
 std::list<std::string>
-stringToTokens(const std::string &str,
-	       const char *delims = "/");
+stringToTokens(const std::string &str, char delim);
 
 template <class T>
 bool