Avoiding to print a wrong PID on the status bar.

Patch by Kamil Dudka.  Bug reported by Don Swaner.


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@5110 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -3,6 +3,9 @@
 	the lock file -- a simple null_at() would not initialize the buffer.
 	* src/files.c (do_lockfile): Make sure that 'lockprog' and 'lockuser'
 	are terminated -- strncpy() does not guarantee that on its own.
+	* src/files.c (do_lockfile): Avoid printing a wrong PID on the status
+	bar due to treating serialized PID bytes as signed integers.  This
+	addresses https://bugzilla.redhat.com/1186384 reported by Don Swaner.
 
 2015-02-01  Benno Schulenberg  <bensberg@justemail.net>
 	* src/winio.c (do_credits): Add a general entry for all translators.

src/files.c

@@ -284,7 +284,7 @@ int do_lockfile(const char *filename)
             return -1;
         }
         strncpy(lockprog, &lockbuf[2], 10);
-        lockpid = lockbuf[25] * 256 + lockbuf[24];
+        lockpid = (unsigned char)lockbuf[25] * 256 + (unsigned char)lockbuf[24];
         strncpy(lockuser, &lockbuf[28], 16);
 #ifdef DEBUG
         fprintf(stderr, "lockpid = %d\n", lockpid);