[PATCH v2 04/25] add_commit_patch_id(): avoid allocating memory unnecessarily

[Johannes Schindelin]

It would appear that we allocate (and forget to release) memory if the
patch ID is not even defined.

Reported by the Coverity tool.

Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
---
 patch-ids.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/patch-ids.c b/patch-ids.c
index fa8f11de826..92eba7a059e 100644
--- a/patch-ids.c
+++ b/patch-ids.c
@@ -99,11 +99,12 @@ struct patch_id *has_commit_patch_id(struct commit *commit,
 struct patch_id *add_commit_patch_id(struct commit *commit,
                                     struct patch_ids *ids)
 {
-       struct patch_id *key = xcalloc(1, sizeof(*key));
+       struct patch_id *key;
 
        if (!patch_id_defined(commit))
                return NULL;
 
+       key = xcalloc(1, sizeof(*key));
        if (init_patch_id_entry(key, commit, ids)) {
                free(key);
                return NULL;
-- 
2.12.2.windows.2.800.gede8f145e06