upnpsoap: Don't honor the NO_RESIZE flag for thumbnails

Some images don't include an embedded thumbnail, and others
have the thumbnail in the wrong aspect ratio.  In these
cases we resize ourselves, which we should allow to occur
regardless of the NO_RESIZE flag.

upnpsoap.c

@@ -620,7 +620,7 @@ add_resized_res(int srcw, int srch, int reqw, int reqh, char *dlna_pn,
 	int dstw = reqw;
 	int dsth = reqh;
 
-	if( args->flags & FLAG_NO_RESIZE )
+	if( (args->flags & FLAG_NO_RESIZE) && reqw > 160 && reqh > 160 )
 		return;
 
 	strcatf(args->str, "<res ");