patch 9.0.0234: cannot make difference between :normal end and argument char

Problem:    Cannot make difference between the end of :normal and a character
            in its argument.
Solution:   Add the "typebuf_was_empty" flag. (closes #10950)

src/version.c

@@ -731,6 +731,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    234,
 /**/
     233,
 /**/