httplive: fix qsort compare so streams are sorted properly.

modules/stream_filter/httplive.c

@@ -920,7 +920,8 @@ static int hls_CompareStreams( const void* a, const void* b )
 {
     hls_stream_t*   stream_a = *(hls_stream_t**)a;
     hls_stream_t*   stream_b = *(hls_stream_t**)b;
-    return stream_a->bandwidth > stream_b->bandwidth;
+
+    return stream_a->bandwidth - stream_b->bandwidth;
 }
 
 /* The http://tools.ietf.org/html/draft-pantos-http-live-streaming-04#page-8