* buffer.c (Fkill_buffer): When unchaining the marker,

reset it's buffer pointer to NULL (Bug#12652).

src/ChangeLog

+2012-10-17  Dmitry Antipov  <dmantipov@yandex.ru>
+
+	* buffer.c (Fkill_buffer): When unchaining the marker,
+	reset it's buffer pointer to NULL (Bug#12652).
+
 2012-10-17  Dmitry Antipov  <dmantipov@yandex.ru>
 
 	Do not verify indirection counters of killed buffers (Bug#12579).

src/buffer.c

@@ -1881,19 +1881,20 @@ cleaning up all windows currently displaying the buffer to be killed. */)
 
   if (b->base_buffer)
     {
-      { /* Unchain all markers that belong to this indirect buffer.
-	   Don't unchain the markers that belong to the base buffer
-	   or its other indirect buffers.  */
-	struct Lisp_Marker **mp;
-	for (mp = &BUF_MARKERS (b); *mp; )
-	  {
-	    struct Lisp_Marker *m = *mp;
-	    if (m->buffer == b)
+      /* Unchain all markers that belong to this indirect buffer.
+	 Don't unchain the markers that belong to the base buffer
+	 or its other indirect buffers.  */
+      struct Lisp_Marker **mp = &BUF_MARKERS (b);
+      while ((m = *mp))
+	{
+	  if (m->buffer == b)
+	    {
+	      m->buffer = NULL;
 	      *mp = m->next;
-	    else
-	      mp = &m->next;
-	  }
-      }
+	    }
+	  else
+	    mp = &m->next;
+	}
     }
   else
     {