core_unreal: Preserve ADSI capability when dialing Local channels.

Dial() already preserves the ADSI capability by copying it to the new
channel, but since Local channel pairs consist of two channels, we
also need to copy the capability to the second channel.

Resolves: #1517

main/core_unreal.c

@@ -887,6 +887,7 @@ void ast_unreal_call_setup(struct ast_channel *semi1, struct ast_channel *semi2)
 	ast_connected_line_copy_to_caller(ast_channel_caller(semi2), ast_channel_connected(semi1));
 	ast_connected_line_copy_from_caller(ast_channel_connected(semi2), ast_channel_caller(semi1));
 
+	ast_channel_adsicpe_set(semi2, ast_channel_adsicpe(semi1));
 	ast_channel_language_set(semi2, ast_channel_language(semi1));
 	ast_channel_musicclass_set(semi2, ast_channel_musicclass(semi1));
 	ast_channel_parkinglot_set(semi2, ast_channel_parkinglot(semi1));