From 41640da2035ced973fb1d425475781b83e5bcac7 Mon Sep 17 00:00:00 2001
From: Matteo Cypriani <mcy@lm7.fr>
Date: Thu, 3 Nov 2016 15:54:50 -0400
Subject: [PATCH] [Positioner] Mobile: fix copy constructor segfault

---
 owlps-positioner/mobile.cc | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/owlps-positioner/mobile.cc b/owlps-positioner/mobile.cc
index fec9c11..fdc8d65 100644
--- a/owlps-positioner/mobile.cc
+++ b/owlps-positioner/mobile.cc
@@ -21,7 +21,7 @@
 
 
 Mobile::Mobile(const Mobile &m):
-  WifiDevice(m), last_results(m.last_results)
+  WifiDevice(m), last_request(nullptr), last_results(m.last_results)
 {
   update_last_request() ;
 }
@@ -42,13 +42,20 @@ void Mobile::update_last_request()
 {
   if (last_results.empty())
     {
-      delete last_request ;
-      last_request = nullptr ;
+      if (last_request)
+        {
+          delete last_request;
+          last_request = nullptr;
+        }
       return ;
     }
 
   if (! last_request)
-    last_request = new Request(*last_results.get_request()) ;
+    {
+      const Request *r = last_results.get_request();
+      if (r)
+        last_request = new Request(*r);
+    }
   else
     *last_request = *last_results.get_request() ;