patch 7.4.2006

Problem:    Crash when using tabnext in BufUnload autocmd. (Norio Takagi)
Solution:   First check that the current buffer is the right one. (Hirohito
            Higashi)

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2006,
 /**/
     2005,
 /**/