Fix -Wformat error in Win-Clang build (take 2)

I managed to cast the wrong parameter in #10982 :-(

BUG=82385

Review URL: https://codereview.webrtc.org/1520493003

Cr-Commit-Position: refs/heads/master@{#10983}
diff --git a/webrtc/base/event_tracer.cc b/webrtc/base/event_tracer.cc
index dec323d..f16bd6f 100644
--- a/webrtc/base/event_tracer.cc
+++ b/webrtc/base/event_tracer.cc
@@ -121,7 +121,7 @@
                 ", \"pid\": %d"
                 ", \"tid\": %d}\n",
                 has_logged_event ? "," : " ", e.name, e.category_enabled,
-                e.phase, e.timestamp, static_cast<int>(e.pid), e.tid);
+                e.phase, e.timestamp, e.pid, static_cast<int>(e.tid));
         has_logged_event = true;
       }
       if (shutting_down)