coccinelle: make use of the "type" FREE_AND_NULL() rule

diff --git a/diff.c b/diff.c
index e35cf6c704505f4a56dc39f0dd39c6691acd1c9b..3561adf49f3f742d88767f63980c7a17bd27ff20 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -1218,8 +1218,7 @@ static void free_diff_words_data(struct emit_callback *ecbdata)
                        regfree(ecbdata->diff_words->word_regex);
                        free(ecbdata->diff_words->word_regex);
                }
-               free(ecbdata->diff_words);
-               ecbdata->diff_words = NULL;
+               FREE_AND_NULL(ecbdata->diff_words);
        }
 }
 
@@ -2951,8 +2950,7 @@ void diff_free_filespec_blob(struct diff_filespec *s)
 void diff_free_filespec_data(struct diff_filespec *s)
 {
        diff_free_filespec_blob(s);
-       free(s->cnt_data);
-       s->cnt_data = NULL;
+       FREE_AND_NULL(s->cnt_data);
 }
 
 static void prep_temp_blob(const char *path, struct diff_tempfile *temp,