Reformat code of UnusedFunctions in NameOpts

Author: nicolasstucki

compiler/src/dotty/tools/dotc/core/NameOps.scala

@@ -174,7 +174,10 @@ object NameOps {
      */
     def functionArity: Int =
       functionArityFor(str.Function) max {
-        val n = functionArityFor(str.ImplicitFunction) max functionArityFor(str.UnusedFunction) max functionArityFor(str.UnusedImplicitFunction)
+        val n =
+          functionArityFor(str.ImplicitFunction) max
+          functionArityFor(str.UnusedFunction) max
+          functionArityFor(str.UnusedImplicitFunction)
         if (n == 0) -1 else n
       }
 
@@ -216,9 +219,8 @@ object NameOps {
      */
     def isSyntheticFunction: Boolean = {
       functionArityFor(str.Function) > MaxImplementedFunctionArity ||
-        functionArityFor(str.ImplicitFunction) >= 1 ||
-        functionArityFor(str.UnusedFunction) >= 1 ||
-        functionArityFor(str.UnusedImplicitFunction) >= 1
+      functionArityFor(str.ImplicitFunction) >= 1 ||
+      isUnusedFunction
     }
 
     /** Parsed function arity for function with some specific prefix */