[PATCH vd_agent_win] Use sprintf_s instead of sprintf to not crash

[Jakub Janků <janku.jakub.jj@xxxxxxxxx>]

---
 vdagent/file_xfer.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vdagent/file_xfer.cpp b/vdagent/file_xfer.cpp
index de1aea1..de98d50 100644
--- a/vdagent/file_xfer.cpp
+++ b/vdagent/file_xfer.cpp
@@ -113,8 +113,8 @@ void FileXfer::handle_start(VDAgentFileXferStartMessage* start,
         if (attempt == 0) {
             strcpy(dest_filename, file_name);
         } else {
-            sprintf(dest_filename, "%.*s (%d)%s", int(extension - file_name), file_name,
-                    attempt, extension);
+            sprintf_s(dest_filename, SPICE_N_ELEMENTS(file_name) + POSTFIX_LEN,
+                      "%.*s (%d)%s", int(extension - file_name), file_name, attempt, extension);
         }
         if ((MultiByteToWideChar(CP_UTF8, 0, dest_filename, -1, file_path + wlen, MAX_PATH - wlen)) == 0) {
             vd_printf("failed converting file_name:%s to WideChar", dest_filename);
-- 
2.13.0

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