patch 9.1.0478: potential deref of NULL pointer in fuzzy_match_str_with_pos

Commit: 
https://github.com/vim/vim/commit/7c57940e3bd883cebb1d73d4b4effa9220d4c4c8
Author: glepnir <glephun...@gmail.com>
Date:   Wed Jun 12 20:31:13 2024 +0200

    patch 9.1.0478: potential deref of NULL pointer in fuzzy_match_str_with_pos
    
    Problem:  potential deref of NULL pointer in fuzzy_match_str_with_pos()
              on cleanup (after v9.1.0476)
    Solution: Only free the pointer if it is non-NULL (glepnir)
    
    closes: #14973
    
    Signed-off-by: glepnir <glephun...@gmail.com>
    Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/search.c b/src/search.c
index 864bfe3b8..20bf399b2 100644
--- a/src/search.c
+++ b/src/search.c
@@ -5198,11 +5198,16 @@ fuzzy_match_str_with_pos(char_u *str UNUSED, char_u 
*pat UNUSED)
 
 cleanup:
     vim_free(tv_str.vval.v_string);
-    list_free(match_str_list);
-    list_free(match_pos_list);
-    list_free(match_score_list);
-    list_free(retlist);
-    list_free(l);
+    if (match_str_list != NULL)
+        list_free(match_str_list);
+    if (match_pos_list != NULL)
+        list_free(match_pos_list);
+    if (match_score_list != NULL)
+        list_free(match_score_list);
+    if (retlist != NULL)
+        list_free(retlist);
+    if (l != NULL)
+        list_free(l);
     ga_clear(match_positions);
     return NULL;
 #else
diff --git a/src/version.c b/src/version.c
index cc2494521..4b695c01e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    478,
 /**/
     477,
 /**/

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