--- lib/util/nssilckt.h.orig	2018-08-31 12:55:53 UTC
+++ lib/util/nssilckt.h
@@ -163,7 +163,7 @@ typedef enum {
 ** Declare the trace record
 */
 struct pzTrace_s {
-    PRUint32 threadID;       /* PR_GetThreadID() */
+    pthread_t threadID;      /* PR_GetThreadID() */
     nssILockOp op;           /* operation being performed */
     nssILockType ltype;      /* lock type identifier */
     PRIntervalTime callTime; /* time spent in function */