From 893f106189198676d8afe82bab711a382eb75fcb Mon Sep 17 00:00:00 2001
From: Moxie Marlinspike <moxie@thoughtcrime.org>
Date: Fri, 9 Sep 2016 11:53:37 -0700
Subject: [PATCH] Fix divide by zero error

Fixes #5674

// FREEBIE
---
 .../securesms/util/SmsCharacterCalculator.java           | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/org/thoughtcrime/securesms/util/SmsCharacterCalculator.java b/src/org/thoughtcrime/securesms/util/SmsCharacterCalculator.java
index 844d44ac25..8b61f99e98 100644
--- a/src/org/thoughtcrime/securesms/util/SmsCharacterCalculator.java
+++ b/src/org/thoughtcrime/securesms/util/SmsCharacterCalculator.java
@@ -27,8 +27,15 @@ public class SmsCharacterCalculator extends CharacterCalculator {
     int messagesSpent       = length[0];
     int charactersSpent     = length[1];
     int charactersRemaining = length[2];
-    int maxMessageSize      = (charactersSpent + charactersRemaining) / messagesSpent;
 
+    int maxMessageSize;
+
+    if (messagesSpent > 0) {
+      maxMessageSize = (charactersSpent + charactersRemaining) / messagesSpent;
+    } else {
+      maxMessageSize = (charactersSpent + charactersRemaining);
+    }
+    
     return new CharacterState(messagesSpent, charactersRemaining, maxMessageSize);
   }
 }