From f0fe4663d5b11f483432932e18d957b2ff54f373 Mon Sep 17 00:00:00 2001
From: Oliver Jowett <oliver@mutability.co.uk>
Date: Sat, 17 Jan 2015 18:26:36 +0000
Subject: [PATCH] Oops, helps to actually commit the fix too..

---
 mode_s.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mode_s.c b/mode_s.c
index ea5a086..ee569fc 100644
--- a/mode_s.c
+++ b/mode_s.c
@@ -1493,6 +1493,11 @@ void applyPhaseCorrection(uint16_t *pPayload) {
     uint32_t early = (pPayload[-1] + pPayload[6]) << 1;
     uint32_t late = (pPayload[3] + pPayload[10]) << 1;
 
+    if (onTime == 0 && early == 0 && late == 0) {
+        // Blah, can't do anything with this, avoid a divide-by-zero
+        return;
+    }
+
     if (early > late) {
         // Our sample period starts late and so includes some of the next bit.