pickaxe: plug regex/kws leak

With -S... --pickaxe-all, free the regex or the kws before returning
even if we found a match.  Also get rid of the variable has_changes,
as we can simply break out of the loop.

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/diffcore-pickaxe.c b/diffcore-pickaxe.c
index 96f7ea67da3895da3efa471d0bf85dee92036e92..c367d8d17afb966830aa5e88451fcef4ea103da7 100644 (file)
--- a/diffcore-pickaxe.c
+++ b/diffcore-pickaxe.c
@@ -221,7 +221,7 @@ static void diffcore_pickaxe_count(struct diff_options *o)
 
        if (opts & DIFF_PICKAXE_ALL) {
                /* Showing the whole changeset if needle exists */
-               for (i = has_changes = 0; !has_changes && i < q->nr; i++) {
+               for (i = 0; i < q->nr; i++) {
                        struct diff_filepair *p = q->queue[i];
                        if (!DIFF_FILE_VALID(p->one)) {
                                if (!DIFF_FILE_VALID(p->two))
@@ -238,9 +238,9 @@ static void diffcore_pickaxe_count(struct diff_options *o)
                                 contains(p->one, needle, len, regexp, kws) !=
                                 contains(p->two, needle, len, regexp, kws))
                                has_changes++;
+                       if (has_changes)
+                               goto out; /* do not munge the queue */
                }
-               if (has_changes)
-                       return; /* not munge the queue */
 
                /* otherwise we will clear the whole queue
                 * by copying the empty outq at the end of this
@@ -278,13 +278,14 @@ static void diffcore_pickaxe_count(struct diff_options *o)
                                diff_free_filepair(p);
                }
 
+       free(q->queue);
+       *q = outq;
+
+ out:
        if (opts & DIFF_PICKAXE_REGEX)
                regfree(&regex);
        else
                kwsfree(kws);
-
-       free(q->queue);
-       *q = outq;
        return;
 }