Revert "[PATCH] plug memory leak in diff.c::diff_free_filepair()"

This reverts 068eac91ce04b9aca163acb1927c3878c45d1a07 commit.
diff --git a/diffcore-break.c b/diffcore-break.c
index b0c8461..06f9a7f 100644
--- a/diffcore-break.c
+++ b/diffcore-break.c
@@ -231,8 +231,8 @@
 
 	dp = diff_queue(outq, d->one, c->two);
 	dp->score = p->score;
-	diff_free_filespec(d->two);
-	diff_free_filespec(c->one);
+	diff_free_filespec_data(d->two);
+	diff_free_filespec_data(c->one);
 	free(d);
 	free(c);
 }