patch 9.0.1056: leaking memory when disassembling an object method

Problem:    Leaking memory when disassembling an object method.
Solution:   Free the typval of the class.
diff --git a/src/version.c b/src/version.c
index 3a37956..be7048a 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1056,
+/**/
     1055,
 /**/
     1054,