From 0caa5139bb7667e1ddbff985fb247c7c1290bbd4 Mon Sep 17 00:00:00 2001
From: Aram <aram@factorit.nl>
Date: Tue, 3 May 2016 17:32:39 +0200
Subject: [PATCH] Safely close fp

---
 libnfc_crypto1_crack.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libnfc_crypto1_crack.c b/libnfc_crypto1_crack.c
index 761ccd0..d835f14 100644
--- a/libnfc_crypto1_crack.c
+++ b/libnfc_crypto1_crack.c
@@ -652,7 +652,9 @@ int main (int argc, const char * argv[]) {
     pthread_join(prediction_thread, 0);
     alarm(0);
 
-    fclose(fp);
+    if(fp){
+        fclose(fp);
+    }
     nfc_close(pnd);
 
     if(!space){