funcs/func_cdr: Fix non-epoch timestamps broken by improper char array deref

Thanks to snuffy for pointing this issue out and fixing it.

(closes issue ASTERISK-23250)
Reported by: snuffy
patches:
  func_cdr-fix.diff uploaded by snuffy (License 5024)
........

Merged revisions 407259 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@407260 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_cdr.c

@@ -293,7 +293,7 @@ static void cdr_read_callback(void *data, struct stasis_subscription *sub, struc
 			}
 			fmt_time.tv_usec = tv_usec;
 			ast_localtime(&fmt_time, &tm, NULL);
-			ast_strftime(tempbuf, sizeof(*tempbuf), "%Y-%m-%d %T", &tm);
+			ast_strftime(tempbuf, sizeof(tempbuf), "%Y-%m-%d %T", &tm);
 		} else if (!strcasecmp("disposition", args.variable)) {
 			int disposition;