Index: /trunk/src/VBox/Runtime/generic/ftp-server.cpp
===================================================================
--- /trunk/src/VBox/Runtime/generic/ftp-server.cpp	(revision 82727)
+++ /trunk/src/VBox/Runtime/generic/ftp-server.cpp	(revision 82728)
@@ -614,5 +614,5 @@
         do
         {
-            size_t cbRead;
+            size_t cbRead = 0;
             RTFTPSERVER_HANDLE_CALLBACK_VA(pfnOnFileRead, pvHandle, pvBuf, cbBuf, &cbRead);
             if (RT_SUCCESS(rc))