Fix the segfault with duration=atol(NULL)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1778 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index 364d205e55460dce7d1f9e236b9586f5df1b12b6..4c28d16a77e1ec17e08387aebc2b0e621b2f8650 100755 (executable)
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -1937,8 +1937,11 @@ forward_message(struct ast_channel *chan, char *context, char *dir, int curmsg,
 
               /* set callerid and duration variables */
               snprintf(callerid, sizeof(callerid), "FWD from: %s from %s", sender->fullname, ast_variable_retrieve(mif, NULL, "callerid"));
-              duration = atol(ast_variable_retrieve(mif, NULL, "duration"));
-                       
+             s = ast_variable_retrieve(mif, NULL, "duration");
+              if (s)
+                     duration = atol(s);
+             else
+                     duration = 0;
              if (strlen(receiver->email)) {
                                int attach_user_voicemail = attach_voicemail;
                                char *myserveremail = serveremail;
@@ -1946,7 +1949,7 @@ forward_message(struct ast_channel *chan, char *context, char *dir, int curmsg,
                                        attach_user_voicemail = receiver->attach;
                                if (strlen(receiver->serveremail))
                                        myserveremail = receiver->serveremail;
-                     sendmail(myserveremail, receiver, todircount, username, callerid, fn, tmp, atol(ast_variable_retrieve(mif, NULL, "duration")), attach_user_voicemail);
+                     sendmail(myserveremail, receiver, todircount, username, callerid, fn, tmp, duration), attach_user_voicemail);
              }
             
                        if (strlen(receiver->pager)) {