Fix memleak

1 files changed, 3 insertions, 1 deletions

diff --git a/user/tlecarrour/porting_guide_for_dummies.mdwn b/user/tlecarrour/porting_guide_for_dummies.mdwn
index 64f0ba0d..cdab3508 100644
--- a/user/tlecarrour/porting_guide_for_dummies.mdwn
+++ b/user/tlecarrour/porting_guide_for_dummies.mdwn
@@ -217,8 +217,10 @@ The code comes from [[https://buildsecurityin.us-cert.gov/bsi/articles/knowledge
             if (buff == NULL)
                 return NULL;
             int nchars = readlink(filename, buff, size);
-            if (nchars < 0)
+            if (nchars < 0) {
+                free(buff);
                 return NULL;
+            }
             if (nchars < size) {
                 buff[nchars] = '\0';
                 return buff;