Upgrade to tcpdump 4.9.2.

From CHANGES:

  Sunday September 3, 2017 denis@ovsienko.info
  Summary for 4.9.2 tcpdump release
    Do not use getprotobynumber() for protocol name resolution.  Do not do
      any protocol name resolution if -n is specified.
    Improve errors detection in the test scripts.
    Fix a segfault with OpenSSL 1.1 and improve OpenSSL usage.
    Clean up IS-IS printing.
    Fix buffer overflow vulnerabilities:
      CVE-2017-11543 (SLIP)
      CVE-2017-13011 (bittok2str_internal)
    Fix infinite loop vulnerabilities:
      CVE-2017-12989 (RESP)
      CVE-2017-12990 (ISAKMP)
      CVE-2017-12995 (DNS)
      CVE-2017-12997 (LLDP)
    Fix buffer over-read vulnerabilities:
      CVE-2017-11541 (safeputs)
      CVE-2017-11542 (PIMv1)
      CVE-2017-12893 (SMB/CIFS)
      CVE-2017-12894 (lookup_bytestring)
      CVE-2017-12895 (ICMP)
      CVE-2017-12896 (ISAKMP)
      CVE-2017-12897 (ISO CLNS)
      CVE-2017-12898 (NFS)
      CVE-2017-12899 (DECnet)
      CVE-2017-12900 (tok2strbuf)
      CVE-2017-12901 (EIGRP)
      CVE-2017-12902 (Zephyr)
      CVE-2017-12985 (IPv6)
      CVE-2017-12986 (IPv6 routing headers)
      CVE-2017-12987 (IEEE 802.11)
      CVE-2017-12988 (telnet)
      CVE-2017-12991 (BGP)
      CVE-2017-12992 (RIPng)
      CVE-2017-12993 (Juniper)
      CVE-2017-11542 (PIMv1)
      CVE-2017-11541 (safeputs)
      CVE-2017-12994 (BGP)
      CVE-2017-12996 (PIMv2)
      CVE-2017-12998 (ISO IS-IS)
      CVE-2017-12999 (ISO IS-IS)
      CVE-2017-13000 (IEEE 802.15.4)
      CVE-2017-13001 (NFS)
      CVE-2017-13002 (AODV)
      CVE-2017-13003 (LMP)
      CVE-2017-13004 (Juniper)
      CVE-2017-13005 (NFS)
      CVE-2017-13006 (L2TP)
      CVE-2017-13007 (Apple PKTAP)
      CVE-2017-13008 (IEEE 802.11)
      CVE-2017-13009 (IPv6 mobility)
      CVE-2017-13010 (BEEP)
      CVE-2017-13012 (ICMP)
      CVE-2017-13013 (ARP)
      CVE-2017-13014 (White Board)
      CVE-2017-13015 (EAP)
      CVE-2017-11543 (SLIP)
      CVE-2017-13016 (ISO ES-IS)
      CVE-2017-13017 (DHCPv6)
      CVE-2017-13018 (PGM)
      CVE-2017-13019 (PGM)
      CVE-2017-13020 (VTP)
      CVE-2017-13021 (ICMPv6)
      CVE-2017-13022 (IP)
      CVE-2017-13023 (IPv6 mobility)
      CVE-2017-13024 (IPv6 mobility)
      CVE-2017-13025 (IPv6 mobility)
      CVE-2017-13026 (ISO IS-IS)
      CVE-2017-13027 (LLDP)
      CVE-2017-13028 (BOOTP)
      CVE-2017-13029 (PPP)
      CVE-2017-13030 (PIM)
      CVE-2017-13031 (IPv6 fragmentation header)
      CVE-2017-13032 (RADIUS)
      CVE-2017-13033 (VTP)
      CVE-2017-13034 (PGM)
      CVE-2017-13035 (ISO IS-IS)
      CVE-2017-13036 (OSPFv3)
      CVE-2017-13037 (IP)
      CVE-2017-13038 (PPP)
      CVE-2017-13039 (ISAKMP)
      CVE-2017-13040 (MPTCP)
      CVE-2017-13041 (ICMPv6)
      CVE-2017-13042 (HNCP)
      CVE-2017-13043 (BGP)
      CVE-2017-13044 (HNCP)
      CVE-2017-13045 (VQP)
      CVE-2017-13046 (BGP)
      CVE-2017-13047 (ISO ES-IS)
      CVE-2017-13048 (RSVP)
      CVE-2017-13049 (Rx)
      CVE-2017-13050 (RPKI-Router)
      CVE-2017-13051 (RSVP)
      CVE-2017-13052 (CFM)
      CVE-2017-13053 (BGP)
      CVE-2017-13054 (LLDP)
      CVE-2017-13055 (ISO IS-IS)
      CVE-2017-13687 (Cisco HDLC)
      CVE-2017-13688 (OLSR)
      CVE-2017-13689 (IKEv1)
      CVE-2017-13690 (IKEv2)
      CVE-2017-13725 (IPv6 routing headers)

Bug: N/A
Test: ran manually
Change-Id: I6fbfa46046ee89d40d13024777e27623a23cb258
diff --git a/configure b/configure
index d2c3eeb..7124f6f 100755
--- a/configure
+++ b/configure
@@ -8116,17 +8116,32 @@
 done
 
 			#
-			# OK, do we have EVP_CIPHER_CTX_new?
+			# OK, then:
+			#
+			# 1) do we have EVP_CIPHER_CTX_new?
 			# If so, we use it to allocate an
 			# EVP_CIPHER_CTX, as EVP_CIPHER_CTX may be
 			# opaque; otherwise, we allocate it ourselves.
 			#
-			for ac_func in EVP_CIPHER_CTX_new
+			# 2) do we have EVP_CipherInit_ex()?
+			# If so, we use it, because we need to be
+			# able to make two "initialize the cipher"
+			# calls, one with the cipher and key, and
+			# one with the IV, and, as of OpenSSL 1.1,
+			# You Can't Do That with EVP_CipherInit(),
+			# because a call to EVP_CipherInit() will
+			# unconditionally clear the context, and
+			# if you don't supply a cipher, it'll
+			# clear the cipher, rendering the context
+			# unusable and causing a crash.
+			#
+			for ac_func in EVP_CIPHER_CTX_new EVP_CipherInit_ex
 do :
-  ac_fn_c_check_func "$LINENO" "EVP_CIPHER_CTX_new" "ac_cv_func_EVP_CIPHER_CTX_new"
-if test "x$ac_cv_func_EVP_CIPHER_CTX_new" = xyes; then :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
   cat >>confdefs.h <<_ACEOF
-#define HAVE_EVP_CIPHER_CTX_NEW 1
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
 fi