pfring: Packet structure for ts fix

Issue: 5818

This commit addresses the issue with using the address of a packed
member of a structure. The pfring timeval is within a packed structure.

(cherry picked from commit 2d28c09ea1)

src/source-pfring.c

@@ -229,7 +229,9 @@ static inline void PfringProcessPacket(void *user, struct pfring_pkthdr *h, Pack
 
     /* PF_RING may fail to set timestamp */
     if (h->ts.tv_sec == 0) {
-        gettimeofday((struct timeval *)&h->ts, NULL);
+        struct timeval tmp_ts;
+        gettimeofday(&tmp_ts, NULL);
+        h->ts = tmp_ts;
     }
 
     p->ts.tv_sec = h->ts.tv_sec;