File sdr-j-fm-fix-no-return.patch of Package sdr-j-fm

diff --git a/src/output/audiosink.cpp b/src/output/audiosink.cpp
index 888ccf2..afc03c6 100644
--- a/src/output/audiosink.cpp
+++ b/src/output/audiosink.cpp
@@ -250,6 +250,8 @@ const	char	*name	= nullptr;
 
 	if (OutputrateIsSupported (ch, rate))
 	   return QString (deviceInfo -> name);
+
+	return "";
 }
 
 int16_t	audioSink::invalidDevice	(void) {