Free reflists after usage

Free reflists in cgit_print_branches() and in cgit_print_tags() before
returning reflist structures to the stack.

This fixes following memory leaks seen with "PATH_INFO=/cgit/refs/":

    ==5710== 1,312 (32 direct, 1,280 indirect) bytes in 1 blocks are definitely lost in loss record 63 of 71
    ==5710==    at 0x4C2C04B: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
    ==5710==    by 0x4C2C2FF: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
    ==5710==    by 0x46CA9B: xrealloc (wrapper.c:100)
    ==5710==    by 0x40AAA6: cgit_add_ref (shared.c:156)
    ==5710==    by 0x40ABC4: cgit_refs_cb (shared.c:186)
    ==5710==    by 0x44BCBA: do_one_ref (refs.c:527)
    ==5710==    by 0x44D240: do_for_each_ref_in_dir (refs.c:553)
    ==5710==    by 0x44D6BA: do_for_each_ref (refs.c:1298)
    ==5710==    by 0x410FE2: cgit_print_branches (ui-refs.c:191)
    ==5710==    by 0x4111E9: cgit_print_refs (ui-refs.c:244)
    ==5710==    by 0x407C85: refs_fn (cmd.c:105)
    ==5710==    by 0x405DDF: process_request (cgit.c:566)
    ==5710==
    ==5710== 6,846 (256 direct, 6,590 indirect) bytes in 1 blocks are definitely lost in loss record 68 of 71
    ==5710==    at 0x4C2C25E: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
    ==5710==    by 0x46CA9B: xrealloc (wrapper.c:100)
    ==5710==    by 0x40AAA6: cgit_add_ref (shared.c:156)
    ==5710==    by 0x40ABC4: cgit_refs_cb (shared.c:186)
    ==5710==    by 0x44BCBA: do_one_ref (refs.c:527)
    ==5710==    by 0x44D240: do_for_each_ref_in_dir (refs.c:553)
    ==5710==    by 0x44D6EC: do_for_each_ref (refs.c:1288)
    ==5710==    by 0x4110D5: cgit_print_tags (ui-refs.c:218)
    ==5710==    by 0x4111FD: cgit_print_refs (ui-refs.c:246)
    ==5710==    by 0x407C85: refs_fn (cmd.c:105)
    ==5710==    by 0x405DDF: process_request (cgit.c:566)
    ==5710==    by 0x407490: cache_process (cache.c:322)

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/cgit.h b/cgit.h
index c655bd8..ed5cf14 100644
--- a/cgit.h
+++ b/cgit.h
@@ -304,6 +304,7 @@ extern char *strlpart(char *txt, int maxlen);
 extern char *strrpart(char *txt, int maxlen);
 
 extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
+extern void cgit_free_reflist_inner(struct reflist *list);
 extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
                         int flags, void *cb_data);