commit.c: make find_commit_subject() more robust

diff --git a/config.c b/config.c
index 27a73c85005fbf709d47adb1458bea688993eba2..69824ebddbdf46660fa6f1ef481add949820d52c 100644 (file)
--- a/config.c
+++ b/config.c
@@ -2116,6 +2116,9 @@ int git_config_set_multivar_in_file(const char *config_filename,
                                          contents_sz - copy_begin) <
                            contents_sz - copy_begin)
                                goto write_err_out;
+
+               munmap(contents, contents_sz);
+               contents = NULL;
        }
 
        if (commit_lock_file(lock) < 0) {