patch 9.0.1338: :defcompile and :disassemble can't find class method

Problem:    :defcompile and :disassemble can't find class method. (Ernie Rael)
Solution:   Make a class name and class.method name work. (closes #11984)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1338,
 /**/
     1337,
 /**/