Fix warnings with gcc 5.0

reconnect.c:
- Convert the K&R prototype of main to an ANSI prototype to mute a
  warning from gcc 4.2.1
- Close s_sock2 after finishing off the last test to plug a leak and
  mute a warning from gcc 5.0 about a -Wunused-but-set variable

sendfile.c:
- Fix a -Wunused-but-set warning with gcc 5.0 with pagesize in main(..)

MFC after: 5 days
Sponsored by: EMC / Isilon Storage Division

tools/regression/sockets/reconnect/reconnect.c

@@ -104,7 +104,7 @@ cleanup(void)
 }
 
 int
-main()
+main(void)
 {
     int s_sock1, s_sock2, c_sock;
 
@@ -127,6 +127,7 @@ main()
     connect_uds_server(c_sock, uds_name1);
     close(s_sock1);
     connect_uds_server(c_sock, uds_name2);
+    close(s_sock2);
 
     exit (0);
 }

tools/regression/sockets/sendfile/sendfile.c

@@ -459,12 +459,9 @@ cleanup(void)
 int
 main(int argc, char *argv[])
 {
-	int pagesize;
 
 	path[0] = '\0';
 
-	pagesize = getpagesize();
-
 	if (argc == 1) {
 		snprintf(path, sizeof(path), "sendfile.XXXXXXXXXXXX");
 		file_fd = mkstemp(path);