Fix minor printf format

In cr-restore printf() format is mixing "%p" and the prefix "0x" which is
already managed by "%p". This leads to log lines like:

(00.053282)  38744: Found bootstrap VMA hint at: 0x0x100000 (needs ~576K)
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/cr-restore.c

@@ -2772,7 +2772,7 @@ static int sigreturn_restore(pid_t pid, struct task_restore_args *task_args, uns
 		goto err;
 	}
 
-	pr_info("Found bootstrap VMA hint at: 0x%p (needs ~%ldK)\n",
+	pr_info("Found bootstrap VMA hint at: %p (needs ~%ldK)\n",
 			mem, KBYTES(task_args->bootstrap_len));
 
 	ret = remap_restorer_blob(mem);