From f4a60f29f354e18d73f61dd53ca9eeee86a13d8e Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Mon, 30 Nov 2015 09:21:45 +0100
Subject: [PATCH] - added missing sc.MustGetString() to 'optional' case of
 decal parser.

---
 src/decallib.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/decallib.cpp b/src/decallib.cpp
index 14b824a7b7..784998977c 100644
--- a/src/decallib.cpp
+++ b/src/decallib.cpp
@@ -608,6 +608,7 @@ void FDecalLib::ParseGenerator (FScanner &sc)
 	// Get name of generator (actor)
 	sc.MustGetString ();
 	optional = sc.Compare("optional");
+	if (optional) sc.MustGetString();
 
 	type = PClass::FindClass (sc.String);
 	if (type == NULL || type->ActorInfo == NULL)
@@ -626,7 +627,7 @@ void FDecalLib::ParseGenerator (FScanner &sc)
 		decal = ScanTreeForName (sc.String, Root);
 		if (decal == NULL)
 		{
-			sc.ScriptError ("%s has not been defined.", sc.String);
+			if (!optional) sc.ScriptError ("%s has not been defined.", sc.String);
 		}
 	}
 	if (type != NULL)