source: pcap timestamp microsecond consistency

That is it should be less than 1 000 000.
Have the same for fuzz targets where the bug came from.

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44177
(cherry picked from commit 8ecf7e403e)

src/source-pcap-file-helper.c

@@ -77,7 +77,7 @@ void PcapFileCallbackLoop(char *user, struct pcap_pkthdr *h, u_char *pkt)
 
     PKT_SET_SRC(p, PKT_SRC_WIRE);
     p->ts.tv_sec = h->ts.tv_sec;
-    p->ts.tv_usec = h->ts.tv_usec;
+    p->ts.tv_usec = h->ts.tv_usec % 1000000;
     SCLogDebug("p->ts.tv_sec %"PRIuMAX"", (uintmax_t)p->ts.tv_sec);
     p->datalink = ptv->datalink;
     p->pcap_cnt = ++pcap_g.cnt;

src/tests/fuzz/fuzz_sigpcap.c

@@ -142,7 +142,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
     r = pcap_next_ex(pkts, &header, &pkt);
     p = PacketGetFromAlloc();
     p->ts.tv_sec = header->ts.tv_sec;
-    p->ts.tv_usec = header->ts.tv_usec;
+    p->ts.tv_usec = header->ts.tv_usec % 1000000;
     p->datalink = pcap_datalink(pkts);
     while (r > 0) {
         if (PacketCopyData(p, pkt, header->caplen) == 0) {
@@ -166,7 +166,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
         r = pcap_next_ex(pkts, &header, &pkt);
         PACKET_RECYCLE(p);
         p->ts.tv_sec = header->ts.tv_sec;
-        p->ts.tv_usec = header->ts.tv_usec;
+        p->ts.tv_usec = header->ts.tv_usec % 1000000;
         p->datalink = pcap_datalink(pkts);
         pcap_cnt++;
         p->pcap_cnt = pcap_cnt;