Breathing - Fix OxyMaskList variable and O2 Mask recognition (#654)

**When merged this pull request will:**
- Fixes the availOxyMaskList variable
- Creates a separate mask check function just for oxygen masks

### IMPORTANT

- [Development Guidelines](https://ace3.acemod.org/wiki/development/)
are read, understood and applied.
- Title of this PR uses our standard template `Component -
Add|Fix|Improve|Change|Make|Remove {changes}`.

addons/breathing/CfgVehicles.hpp

@@ -128,7 +128,7 @@ class CfgVehicles {
                 };
                 class Attach_PersonalOxygen {
                     displayName = CSTRING(AttachPersonalOxygenTank);
-                    condition = QUOTE(([ARR_2(_player,'kat_personal_oxygen')] call ACEFUNC(common,hasMagazine)) && (_player call EFUNC(airway,checkMask)));
+                    condition = QUOTE(([ARR_2(_player,'kat_personal_oxygen')] call ACEFUNC(common,hasMagazine)) && (_player call FUNC(checkOxygenMask)));
                     statement = QUOTE(_player call FUNC(attachPersonalOxygen));
                     showDisabled = 0;
                     exceptions[] = {"isNotSwimming", "isNotOnLadder"};
@@ -176,7 +176,7 @@ class CfgVehicles {
         class ACE_SelfActions {
             class KAT_AttachOxygenVehicle {
                 displayName = CSTRING(AttachOxygenVehicle);
-                condition = QUOTE((_player call FUNC(checkAircraftOxygen)) && (_player call EFUNC(airway,checkMask)));
+                condition = QUOTE((_player call FUNC(checkAircraftOxygen)) && (_player call FUNC(checkOxygenMask)));
                 statement = QUOTE(_player call FUNC(attachVehicleOxygen));
                 insertChildren = "";
                 exceptions[] = {};
@@ -189,7 +189,7 @@ class CfgVehicles {
         class ACE_SelfActions {
             class KAT_AttachOxygenVehicle {
                 displayName = CSTRING(AttachOxygenVehicle);
-                condition = QUOTE((_player call FUNC(checkAircraftOxygen)) && (_player call EFUNC(airway,checkMask)));
+                condition = QUOTE((_player call FUNC(checkAircraftOxygen)) && (_player call FUNC(checkOxygenMask)));
                 statement = QUOTE(_player call FUNC(attachVehicleOxygen));
                 insertChildren = "";
                 exceptions[] = {};

addons/breathing/XEH_PREP.hpp

@@ -3,6 +3,7 @@ PREP(attachVehicleOxygen);
 PREP(canUseBVM);
 PREP(checkAircraftOxygen);
 PREP(checkBreathing);
+PREP(checkOxygenMask);
 PREP(checkPersonalOxygen);
 PREP(checkPulseOximeter);
 PREP(detachPersonalOxygen);

addons/breathing/XEH_postInit.sqf

@@ -23,5 +23,6 @@
 [QACEGVAR(medical,woundReceived),LINKFUNC(handlePulmoHit)] call CBA_fnc_addEventHandler;
 
 private _items = missionNamespace getVariable [QGVAR(availOxyMask), "'G_AirPurifyingRespirator_01_F'"];
-private _array = [_items, "CfgGlasses"] call FUNC(getList);
+private _array = [_items, "CfgGlasses"] call EFUNC(chemical,getList);
+
 missionNamespace setVariable [QGVAR(availOxyMaskList), _array, true];

addons/breathing/XEH_preInit.sqf

@@ -27,7 +27,7 @@ PREP_RECOMPILE_END;
     "'G_AirPurifyingRespirator_01_F'",
     1,
     {
-        private _array = [_this, "CfgGlasses"] call FUNC(getList);
+        private _array = [_this, "CfgGlasses"] call EFUNC(chemical,getList);
         missionNamespace setVariable [QGVAR(availOxyMaskList), _array, true];
     },
     true

addons/breathing/functions/fnc_checkOxygenMask.sqf

@@ -0,0 +1,24 @@
+#include "..\script_component.hpp"
+/*
+ * Author: Mazinski
+ * Checks if patient has an oxygen mask on
+ *
+ * Arguments:
+ * 0: Unit <OBJECT>
+ *
+ * Return Value:
+ * None
+ *
+ * Example:
+ * [player] call kat_breathing_fnc_checkOxygenMask;
+ *
+ * Public: No
+ */
+
+params ["_patient"];
+
+if ((goggles _patient in (missionNamespace getVariable [QGVAR(availOxyMaskList), []]))) exitWith {
+    true
+};
+
+false