main/cdr: Copy over location information during a fork

When a CDR is forked, a new CDR is created and appended to the CDR chain for
the Party A. The forked CDR starts life off as a clone of the last
non-finalized for the particular Party A. In the past, merely copying over
the snapshots for Party A/Party B would be sufficient. However, as the CDRs
now contain cached information from Party A - specifically application/data,
context, and extension - we need to copy that over during a fork as well.

Huzzah for unit tests catching this when the context/extension were derived
from a cached value on the CDR instead of on Party A.
........

Merged revisions 422769 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@422770 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/cdr.c

@@ -3386,6 +3386,10 @@ int ast_cdr_fork(const char *channel_name, struct ast_flags *options)
 		}
 		new_cdr->fn_table = cdr_obj->fn_table;
 		ast_string_field_set(new_cdr, bridge, cdr->bridge);
+		ast_string_field_set(new_cdr, appl, cdr->appl);
+		ast_string_field_set(new_cdr, data, cdr->data);
+		ast_string_field_set(new_cdr, context, cdr->context);
+		ast_string_field_set(new_cdr, exten, cdr->exten);
 		new_cdr->flags = cdr->flags;
 		/* Explicitly clear the AST_CDR_LOCK_APP flag - we want
 		 * the application to be changed on the new CDR if the