setup_discovered_git_dir(): plug memory leak

The setup_explicit_git_dir() function does not take custody of the string
passed as first parameter; we have to release it if we turned the value of
git_dir into an absolute path.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/setup.c b/setup.c
index 0320a9ad14c9c2e37c8b69e5b86ae0bc3e2adb0c..e3f7699a902aed20a83820067cf913df2f3750a9 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -703,11 +703,16 @@ static const char *setup_discovered_git_dir(const char *gitdir,
 
        /* --work-tree is set without --git-dir; use discovered one */
        if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
+               char *to_free = NULL;
+               const char *ret;
+
                if (offset != cwd->len && !is_absolute_path(gitdir))
-                       gitdir = real_pathdup(gitdir, 1);
+                       gitdir = to_free = real_pathdup(gitdir, 1);
                if (chdir(cwd->buf))
                        die_errno("Could not come back to cwd");
-               return setup_explicit_git_dir(gitdir, cwd, nongit_ok);
+               ret = setup_explicit_git_dir(gitdir, cwd, nongit_ok);
+               free(to_free);
+               return ret;
        }
 
        /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */