Assay Power Hotfix (#1551)

# Description

Assay featured the return of a bug that was present with the "Heal Other
Powers", which made it so that failing to cast the Assay power (due to
attempting to use it while moving for instance), caused the player to
permanently lose the ability to cast any psi powers. The reason for this
and the fix for it are pretty much exactly the same as it was for
HealOtherPowerSystem.

Goddamn I **desperately** need to generalize these powers so I never
have to go through this again.

# Changelog

:cl:
- fix: Fixed a bug where failing to cast the Assay power meant one lost
the ability to ever use psionic powers again.

Author: VMSolidus

Content.Server/Abilities/Psionics/Abilities/AssayPowerSystem.cs

@@ -40,16 +40,19 @@ private void OnPowerUsed(EntityUid uid, PsionicComponent psionic, AssayPowerActi
             return;
 
         var ev = new AssayDoAfterEvent(_gameTiming.CurTime, args.FontSize, args.FontColor);
-        _doAfterSystem.TryStartDoAfter(new DoAfterArgs(EntityManager, args.Performer, args.UseDelay - TimeSpan.FromSeconds(psionic.CurrentAmplification), ev, args.Performer, args.Target, args.Performer)
+        var doAfterArgs = new DoAfterArgs(EntityManager, args.Performer, args.UseDelay - TimeSpan.FromSeconds(psionic.CurrentAmplification), ev, args.Performer, args.Target, args.Performer)
         {
             BlockDuplicate = true,
             BreakOnMove = true,
             BreakOnDamage = true,
-        }, out var doAfterId);
+        };
+
+        if (!_doAfterSystem.TryStartDoAfter(doAfterArgs, out var doAfterId))
+            return;
+
         psionic.DoAfter = doAfterId;
 
         _popups.PopupEntity(Loc.GetString(args.PopupTarget, ("entity", args.Target)), args.Performer, PopupType.Medium);
-
         _audioSystem.PlayPvs(args.SoundUse, args.Performer, AudioParams.Default.WithVolume(8f).WithMaxDistance(1.5f).WithRolloffFactor(3.5f));
         _psionics.LogPowerUsed(args.Performer, args.PowerName, args.MinGlimmer, args.MaxGlimmer);
         args.Handled = true;