s3-winreg_nt: Fixed QueryValue with data=NULL to get the length. (cherry picked from...

(cherry picked from commit b541fb1500aad87aee46ef48036f3b4a05b119cd)

diff --git a/source3/rpc_server/srv_winreg_nt.c b/source3/rpc_server/srv_winreg_nt.c
index 840acba58f930d1fc0a4609ee1069f29091771c6..04c9c8ccfa7d830067c891dfa70ccb94104b6c58 100644 (file)
--- a/source3/rpc_server/srv_winreg_nt.c
+++ b/source3/rpc_server/srv_winreg_nt.c
@@ -320,7 +320,9 @@ WERROR _winreg_QueryValue(pipes_struct *p, struct winreg_QueryValue *r)
        } else {
                *r->out.data_length = outbuf_size;
                *r->out.data_size = outbuf_size;
-               memcpy(r->out.data, outbuf, outbuf_size);
+               if (r->out.data) {
+                       memcpy(r->out.data, outbuf, outbuf_size);
+               }
                status = WERR_OK;
        }