patch 9.1.0378: Vim9: no comments allowed after class vars

Problem:  Vim9: no comments allowed after class vars
          (Christian Robinson, after 9.1.376)
Solution: Allow trailing comments after class vars
          (Yegappan Lakshmanan)

closes: #14651

Signed-off-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/test_vim9_class.vim

@@ -103,6 +103,18 @@ def Test_class_basic()
   END
   v9.CheckSourceFailure(lines, "E488: Trailing characters: | var y = 10", 3)
 
+  # Comments are allowed after an inline block
+  lines =<< trim END
+    vim9script
+    class Foo
+      static const bar = { # {{{
+        baz: 'qux'
+      } # }}}
+    endclass
+    assert_equal({baz: 'qux'}, Foo.bar)
+  END
+  v9.CheckSourceSuccess(lines)
+
   # Try to define a class with the same name as an existing variable
   lines =<< trim END
     vim9script

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    378,
 /**/
     377,
 /**/

src/vim9class.c

@@ -137,7 +137,7 @@ parse_member(
 	(void)skip_expr_concatenate(&init_arg, &expr_start, &expr_end, &evalarg);
 
 	init_arg = skipwhite(init_arg);
-	if (*init_arg != NUL)
+	if (*init_arg != NUL && !vim9_comment_start(init_arg))
 	{
 	    semsg(_(e_trailing_characters_str), init_arg);
 	    return FAIL;