RTP out: use make_path for SDP file

modules/stream_out/rtp.c

@@ -699,13 +699,9 @@ static void SDPHandleUrl( sout_stream_t *p_stream, const char *psz_url )
             msg_Err( p_stream, "you can use sdp=file:// only once" );
             goto out;
         }
-        psz_url = &psz_url[5];
-        if( psz_url[0] == '/' && psz_url[1] == '/' )
-            psz_url += 2;
-        p_sys->psz_sdp_file = strdup( psz_url );
+        p_sys->psz_sdp_file = make_path( psz_url );
         if( p_sys->psz_sdp_file == NULL )
             goto out;
-        decode_URI( p_sys->psz_sdp_file ); /* FIXME? */
         FileSetup( p_stream );
     }
     else