souphttpsrc: Use new automatic_eos API from basesrc

We want to notice ourselves that we're EOS. Otherwise we will
always cancel requests in the very end and confuse the server...
and also make it impossible to use persistent connections.

ext/soup/gstsouphttpsrc.c

@@ -377,6 +377,8 @@ gst_soup_http_src_init (GstSoupHTTPSrc * src)
         proxy);
   }
 
+  gst_base_src_set_automatic_eos (GST_BASE_SRC (src), FALSE);
+
   gst_soup_http_src_reset (src);
 }