patch 8.0.0667: memory access error when command follows :endfunc

Problem:    Memory access error when command follows :endfunction. (Nikolai
            Pavlov)
Solution:   Make memory handling in :function straightforward. (closes #1793)
diff --git a/src/version.c b/src/version.c
index 52ed102..daa3531 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    667,
+/**/
     666,
 /**/
     665,