Avoiding to write uninitialized bytes to the lock file.

Patch by Kamil Dudka.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5108 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -1,3 +1,7 @@
+2015-02-01  Kamil Dudka  <kdudka@redhat.com>
+	* src/files.c (write_lockfile): Avoid writing uninitialized bytes to
+	the lock file -- a simple null_at() would not initialize the buffer.
+
 2015-02-01  Benno Schulenberg  <bensberg@justemail.net>
 	* src/winio.c (do_credits): Add a general entry for all translators.
 	* src/nano.c (version), src/winio.c (do_credits): Update the copyright

src/files.c

@@ -195,7 +195,7 @@ int write_lockfile(const char *lockfilename, const char *origfilename, bool modi
      * our lockfile' message in here...
      *
      * This is likely very wrong, so this is a WIP. */
-    null_at(&lockdata, lockdatalen);
+    memset(lockdata, 0, lockdatalen);
     lockdata[0] = 0x62;
     lockdata[1] = 0x30;
     lockdata[24] = mypid % 256;