File LibVNCServer-CVE-2018-6307.patch of Package LibVNCServer.15607

diff --git a/libvncserver/tightvnc-filetransfer/handlefiletransferrequest.c b/libvncserver/tightvnc-filetransfer/handlefiletransferrequest.c
index c511eed1..04737831 100644
--- a/libvncserver/tightvnc-filetransfer/handlefiletransferrequest.c
+++ b/libvncserver/tightvnc-filetransfer/handlefiletransferrequest.c
@@ -585,6 +585,8 @@ HandleFileDownloadCancelRequest(rfbClientPtr cl, rfbTightClientPtr rtcp)
 					"FileDownloadCancelMsg\n", __FILE__, __FUNCTION__);
 		
 	    rfbCloseClient(cl);
+	    free(reason);
+	    return;
 	}
 
 	rfbLog("File [%s]: Method [%s]: File Download Cancel Request received:"