Merged revisions 107019 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
r107019 | murf | 2008-03-10 08:55:21 -0600 (Mon, 10 Mar 2008) | 1 line

way back in July, in r.75706, a fix was made ot the strftime usages, which was good, but in this case, the check for a nil time was accidentally removed, and now it is restored, to keep timevals like '1969-12-31 17:00:00' from showing up in the cdrs. No idea what databases will do with this. No bugs filed as yet, but it felt like a bug.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@107289 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/cdr.c

@@ -200,11 +200,13 @@ static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsiz
 {
 	if (fmt == NULL) {	/* raw mode */
 		snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
-	} else {  
-		struct ast_tm tm;
-
-		ast_localtime(&tv, &tm, NULL);
-		ast_strftime(buf, bufsize, fmt, &tm);
+	} else {
+		if (tv.tv_sec) {
+			struct ast_tm tm;
+			
+			ast_localtime(&tv, &tm, NULL);
+			ast_strftime(buf, bufsize, fmt, &tm);
+		}
 	}
 }