patch 8.1.1010: Lua interface leaks memory

Problem:    Lua interface leaks memory.
Solution:   Clear typeval after copying it.
diff --git a/src/version.c b/src/version.c
index 2c91664..dc2d73d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -780,6 +780,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1010,
+/**/
     1009,
 /**/
     1008,