patch 9.0.1136: memory leak when getting class member type from expr

Problem:    Memory leak when getting class member type from expr.
Solution:   Clear the expression result.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1136,
 /**/
     1135,
 /**/