From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 13 May 2017 11:27:31 +0000 (+0100)
Subject: key/key-io.c: Fix segfault opening `KOPEN_READ | KOPEN_NOFILE' key files.
X-Git-Tag: 2.3.1~10
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/catacomb/commitdiff_plain/692e9621bf38a590d2a4a44a9e571df640b07211?hp=-c

key/key-io.c: Fix segfault opening `KOPEN_READ | KOPEN_NOFILE' key files.

They're useless, but they shouldn't cause a crash.
---

692e9621bf38a590d2a4a44a9e571df640b07211
diff --git a/key/key-io.c b/key/key-io.c
index df7cd53f..b2dc9189 100644
--- a/key/key-io.c
+++ b/key/key-io.c
@@ -439,7 +439,7 @@ int key_open(key_file *f, const char *file, unsigned how,
 
   if ((how & KOPEN_MASK) == KOPEN_READ) {
     f->f &= ~KF_WRITE;
-    fclose(f->fp);
+    if (f->fp) fclose(f->fp);
     f->fp = 0;
   }