Fix usage of sprintf.

sprintf is marked as deprecated with Xcode 14.

Bug: chromium:1331345
Change-Id: Ib7eb7ab829457f3ef5fcad44b43fe827359ad7d4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/265200
Commit-Queue: Harald Alvestrand <hta@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Auto-Submit: Justin Cohen <justincohen@google.com>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37136}
diff --git a/rtc_base/http_common.cc b/rtc_base/http_common.cc
index 2968cf1..621b854 100644
--- a/rtc_base/http_common.cc
+++ b/rtc_base/http_common.cc
@@ -305,7 +305,7 @@
 
     std::string cnonce, ncount;
     char buffer[256];
-    sprintf(buffer, "%d", static_cast<int>(time(0)));
+    snprintf(buffer, sizeof(buffer), "%d", static_cast<int>(time(0)));
     cnonce = MD5(buffer);
     ncount = "00000001";