patch 8.2.4732: duplicate code to free fuzzy matches

Problem:    Duplicate code to free fuzzy matches.
Solution:   Bring back fuzmatch_str_free().
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index ca669c0..9bcea7e 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -2877,13 +2877,7 @@
 		ga_clear_strings(&ga);
 		return FAIL;
 	    }
-
-	    for (i = 0; i < ga.ga_len; ++i)
-	    {
-		fuzmatch = &((fuzmatch_str_T *)ga.ga_data)[i];
-		vim_free(fuzmatch->str);
-	    }
-	    ga_clear(&ga);
+	    fuzmatch_str_free(ga.ga_data, ga.ga_len);
 	    return FAIL;
 	}