Eat our own dog food, call libssh2_init and libssh2_exit in the examples.

example/sftp_nonblock.c

@@ -121,6 +121,13 @@ int main(int argc, char *argv[])
     if (argc > 4) {
         sftppath = argv[4];
     }
+
+    rc = libssh2_init (0);
+    if (rc != 0) {
+        fprintf (stderr, "libssh2 initialization failed (%d)\n", rc);
+        return 1;
+    }
+
     /*
      * The application code is responsible for creating the socket
      * and establishing the connection
@@ -269,5 +276,8 @@ shutdown:
     close(sock);
 #endif
     fprintf(stderr, "all done\n");
+
+    libssh2_exit();
+
     return 0;
 }