fixed some bugs that prevented lte-softmodem to exit properly

eNB stats are printed on screen on program exit


git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5870 818b1a75-f10b-46b9-bf7c-635c3b92a50f

common/utils/itti/backtrace.c

@@ -60,5 +60,5 @@ void display_backtrace(void)
 void backtrace_handle_signal(siginfo_t *info)
 {
     display_backtrace();
-    exit(EXIT_FAILURE);
+    //exit(EXIT_FAILURE);
 }

common/utils/itti/signals.c

@@ -112,7 +112,7 @@ int signal_handle(int *end)
         return ret;
     }
 
-//     printf("Received signal %d\n", info.si_signo);
+     printf("Received signal %d\n", info.si_signo);
 
     /* Real-time signals are non constant and are therefore not suitable for
      * use in switch.