Reuse api_key_len

1 files changed, 1 insertions, 1 deletions

diff --git a/shopify.c b/shopify.c
index 469a0b6..6c5175f 100644
--- a/shopify.c
+++ b/shopify.c
@@ -411,7 +411,7 @@ static enum MHD_Result handle_request(void *cls, struct MHD_Connection *con,
 		curl_easy_setopt(curl, CURLOPT_URL, url);
 		static const char *post_tmpl
 			= "client_id=%s&client_secret=%s&code=%s";
-		char post[strlen(post_tmpl) - strlen("%s") * 3 + strlen(api_key)
+		char post[strlen(post_tmpl) - strlen("%s") * 3 + api_key_len
 			+ api_secret_key_len + strlen(code) + 1];
 		sprintf(post, post_tmpl, api_key, api_secret_key, code);
 		curl_easy_setopt(curl, CURLOPT_POSTFIELDS, post);