Releases all memory used by the data container.
If you have obtained a handle to a structure or table parameter of that function module
(RFC_STRUCTURE_HANDLE or RFC_TABLE_HANDLE), that handle will be invalid afterwards, as the corresponding memory has been released as well!
RFC_RC SAP_API RfcDestroyFunction(RFC_FUNCTION_HANDLE funcHandle, RFC_ERROR_INFO* errorInfo);
funcHandle: function handle;