Fix ATIS messages silently dropped when containing placeholder lines

[Copilot]

Fixes #359. VATSIM ATIS messages containing placeholder lines (e.g., "z", "z1", "z2") were silently dropped and never displayed to users.

Root Cause

In updateAtisMap(), three return statements inside a for loop exit the entire function when a placeholder line is encountered, preventing the atisReplyReceived signal from being emitted:

// Before: exits function, drops entire ATIS
if (test == "z") return;
if (test.startsWith("z") && test.length() == 2) return;
if (test.length() == 1) return;

Fix

Changed return to continue to skip placeholder lines while still processing remaining content:

// After: skips line, continues processing
if (test == "z") continue;
if (test.startsWith("z") && test.length() == 2) continue;
if (test.length() == 1) continue;

Original prompt

Investigate the reason for issue 359

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[ltoenning]

@tzobler Do you know the reason behind the z1, z2, ... within the ATIS lines? Is this something FSD-specific? I couldn't find any further information about this.

Anyways, this change likely does not explain why updating does not work while the initial ATIS update works fine.

[tzobler]

@tzobler Do you know the reason behind the z1, z2, ... within the ATIS lines? Is this something FSD-specific? I couldn't find any further information about this.

Anyways, this change likely does not explain why updating does not work while the initial ATIS update works fine.

To my knowledge, the FSD server behaves transparently with regard to ATIS. A typical sequence of events is as follows:

request ATIS from the ATC-client
$CQFSC131:EDDM_CTR:ATIS
answer (example):
$CREDDM_CTR:FSC131:ATIS:V:UseAFV
$CREDDM_CTR:FSC131:ATIS:T:Auckland Tower - ATIS 127.80
$CREDDM_CTR:FSC131:ATIS:T:Charts- vats.im/nz/charts
$CREDDM_CTR:FSC131:ATIS:T:Submit feedback - vats.im/nz/atc-fb
$CREDDM_CTR:FSC131:ATIS:Z:1200
$CREDDM_CTR:FSC131:ATIS:E:3

The number of :T: lines is variable. The :Z: line is not always present. However, the :E: line, which terminates the transmission, is typical.