hotplug-rule: fix off-by-one error in blobmsg string buffer realloc

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/hotplug-rule.c b/hotplug-rule.c
index b157fcd..b90ae52 100644 (file)
--- a/hotplug-rule.c
+++ b/hotplug-rule.c
@@ -354,7 +354,7 @@ static void cmd_add_string(const char *pattern, struct blob_attr *msg)
                }
 
                if (cur_len) {
-                       dest = blobmsg_realloc_string_buffer(&b, cur_len);
+                       dest = blobmsg_realloc_string_buffer(&b, cur_len + 1);
                        memcpy(dest + len, cur, cur_len);
                        len += cur_len;
                }