typewriter keymap minor change

FontTestGDX/src/FontTestGDX.kt

@@ -34,7 +34,6 @@ class FontTestGDX : Game() {
     private lateinit var faketex: Texture
 
     override fun create() {
-        font = TerrarumSansBitmap("./assets", flipY = false, errorOnUnknownChar = false, shadowAlpha = 0.796f) // must test for two flipY cases
         font = TerrarumSansBitmap("./assets", debug = true, flipY = false, errorOnUnknownChar = false, shadowAlpha = 0.796f) // must test for two flipY cases
 
         val inTextFile = Gdx.files.internal("./$demotextName")

src/net/torvald/terrarumtypewriterbitmap/gdx/TerrarumTypewriterBitmap.kt

@@ -585,9 +585,14 @@ class TerrarumTypewriterBitmap(
         val hashPrime = 1099511628211L
         var hashAccumulator = hashBasis
 
-        this.forEach {
-            hashAccumulator = hashAccumulator xor it.toLong()
-            hashAccumulator *= hashPrime
+        if (this != null) {
+            this.forEach {
+                hashAccumulator = hashAccumulator xor it.toLong()
+                hashAccumulator *= hashPrime
+            }
+        }
+        else {
+            System.err.println("CodepointSequence is null?!")
         }
 
         return hashAccumulator