From 39cdc7b10800ee0a31f6a6e6b98870bdb0f29fdb Mon Sep 17 00:00:00 2001
From: Krishna Vedala <7001608+kvedala@users.noreply.github.com>
Date: Mon, 13 Jul 2020 00:14:29 -0400
Subject: [PATCH] fix possible memory leak

---
 project_euler/problem_13/sol1.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/project_euler/problem_13/sol1.c b/project_euler/problem_13/sol1.c
index cc34d7a4..b3420672 100644
--- a/project_euler/problem_13/sol1.c
+++ b/project_euler/problem_13/sol1.c
@@ -140,6 +140,9 @@ numbers. For safety, we make it twice the length of a number. */
     if (!fp)
     {
         perror("Unable to open file 'num.txt'.");
+        free(txt_buffer);
+        free(sum);
+        free(number);
         return -1;
     }