Add missing static declarations in dtlsv1listentest.c

Clang rightly does not like extern symbols that are not declared
in any header file, as typically these are not intended for global
visibility and are exposed in error.  This was indeed the case with
various file-scope objects in dtlsv1listentest.c.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

test/dtlsv1listentest.c

@@ -65,7 +65,7 @@
 #include "e_os.h"
 
 /* Just a ClientHello without a cookie */
-const unsigned char clienthello_nocookie[] = {
+static const unsigned char clienthello_nocookie[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -91,7 +91,7 @@ const unsigned char clienthello_nocookie[] = {
 };
 
 /* First fragment of a ClientHello without a cookie */
-const unsigned char clienthello_nocookie_frag[] = {
+static const unsigned char clienthello_nocookie_frag[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -111,7 +111,7 @@ const unsigned char clienthello_nocookie_frag[] = {
 };
 
 /* First fragment of a ClientHello which is too short */
-const unsigned char clienthello_nocookie_short[] = {
+static const unsigned char clienthello_nocookie_short[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -130,7 +130,7 @@ const unsigned char clienthello_nocookie_short[] = {
 };
 
 /* Second fragment of a ClientHello */
-const unsigned char clienthello_2ndfrag[] = {
+static const unsigned char clienthello_2ndfrag[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -156,7 +156,7 @@ const unsigned char clienthello_2ndfrag[] = {
 };
 
 /* A ClientHello with a good cookie */
-const unsigned char clienthello_cookie[] = {
+static const unsigned char clienthello_cookie[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -184,7 +184,7 @@ const unsigned char clienthello_cookie[] = {
 };
 
 /* A fragmented ClientHello with a good cookie */
-const unsigned char clienthello_cookie_frag[] = {
+static const unsigned char clienthello_cookie_frag[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -207,7 +207,7 @@ const unsigned char clienthello_cookie_frag[] = {
 
 
 /* A ClientHello with a bad cookie */
-const unsigned char clienthello_badcookie[] = {
+static const unsigned char clienthello_badcookie[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -235,7 +235,7 @@ const unsigned char clienthello_badcookie[] = {
 };
 
 /* A fragmented ClientHello with the fragment boundary mid cookie */
-const unsigned char clienthello_cookie_short[] = {
+static const unsigned char clienthello_cookie_short[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -257,14 +257,14 @@ const unsigned char clienthello_cookie_short[] = {
 };
 
 /* Bad record - too short */
-const unsigned char record_short[] = {
+static const unsigned char record_short[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* Record sequence number */
 };
 
-const unsigned char verify[] = {
+static const unsigned char verify[] = {
     0x16, /* Handshake */
     0xFE, 0xFF, /* DTLSv1.0 */
     0x00, 0x00, /* Epoch */
@@ -281,7 +281,7 @@ const unsigned char verify[] = {
     0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13 /* Cookie */
 };
 
-struct {
+static struct {
     const unsigned char *in;
     unsigned int inlen;
     /*