patch 9.0.1318: code style test fails

Problem:    Code style test fails.
Solution:   Remove trailing white space.

src/testdir/test_vim9_class.vim

@@ -190,7 +190,7 @@ def Test_object_not_set()
         this.value = 'xyz'
       endclass
 
-      var state: State 
+      var state: State
       var db = {'xyz': 789}
       echo db[state.value]
   END

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1318,
 /**/
     1317,
 /**/