Fix duplicate extmarks in Common Lisp

Some delimiters could get the same extmark twice.  This would have no
visual impact, but it is still a bug and can mess up testing.

CHANGELOG.rst

@@ -15,7 +15,8 @@ Unreleased
 Fixed
 =====
 
-- Make a better effort to make parentheses in Vim scrip expressions work (there
+- Common Lisp query: duplicate extmarks on some delimiters
+- Make a better effort to make parentheses in Vim script expressions work (there
   is only so much that can be done though)
 
 

queries/commonlisp/rainbow-delimiters.scm

@@ -1,11 +1,9 @@
 (list_lit
   "(" @delimiter
-   _*
    ")" @delimiter @sentinel) @container
 
 (defun
   "(" @delimiter
-   _*
    ")" @delimiter @sentinel) @container
 
 (loop_macro

test/highlight/spec/commonlisp/rainbow-delimiters/regular.lisp.lua

@@ -5,12 +5,6 @@ return {
       hl_group = "RainbowDelimiterRed",
       start_col = 0,
       start_row = 0
-    }, {
-      end_col = 1,
-      end_row = 1,
-      hl_group = "RainbowDelimiterRed",
-      start_col = 0,
-      start_row = 0
     }, {
       end_col = 12,
       end_row = 12,