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-rw-r--r--src/signature.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/signature.c b/src/signature.c
index 52ca2b375..ec51a42e9 100644
--- a/src/signature.c
+++ b/src/signature.c
@@ -84,8 +84,12 @@ int git_signature_new(git_signature **sig_out, const char *name, const char *ema
git_signature *git_signature_dup(const git_signature *sig)
{
- git_signature *new = git__calloc(1, sizeof(git_signature));
+ git_signature *new;
+ if (sig == NULL)
+ return NULL;
+
+ new = git__calloc(1, sizeof(git_signature));
if (new == NULL)
return NULL;