Use compound assignment

drewnoakes · drewnoakes · commit ebf9ce6d58f7 · 2022-11-01T10:58:56.000+11:00
diff --git a/Figgle/FiggleFontParser.cs b/Figgle/FiggleFontParser.cs
@@ -88,8 +88,7 @@ int UpgradeLayout()
             for (var i = 0; i < commentLineCount; i++)
                 reader.ReadLine();
 
-            if (pool == null)
-                pool = new StringPool();
+            pool ??= new StringPool();
 
             /*
             Characters 0-31 are control characters.
