Fixed linter error

Author: rbuckton

src/compiler/checker.ts

@@ -8652,7 +8652,7 @@ namespace ts {
  let classSymbol = getSymbolOfNode(node);
  return getTypeOfSymbol(classSymbol);
  }
- 
+
  if (node.kind === SyntaxKind.Parameter) {
  // For a parameter decorator, the `target` is the parent type of the
  // parameter's containing method.
@@ -8662,7 +8662,7 @@ namespace ts {
  return getTypeOfSymbol(classSymbol);
  }
  }
- 
+
  if (node.kind === SyntaxKind.PropertyDeclaration ||
  node.kind === SyntaxKind.MethodDeclaration ||
  node.kind === SyntaxKind.GetAccessor ||
@@ -8699,7 +8699,7 @@ namespace ts {
  Debug.fail("Class decorators should not have a second synthetic argument.");
  return unknownType;
  }
- 
+
  if (node.kind === SyntaxKind.Parameter) {
  node = node.parent;
  if (node.kind === SyntaxKind.Constructor) {
@@ -8710,7 +8710,7 @@ namespace ts {
  // For a non-constructor parameter decorator, the `propertyKey` will be either
  // a string or a symbol, based on the name of the parameter's containing method.
  }
- 
+
  if (node.kind === SyntaxKind.PropertyDeclaration ||
  node.kind === SyntaxKind.MethodDeclaration ||
  node.kind === SyntaxKind.GetAccessor ||
@@ -8759,17 +8759,17 @@ namespace ts {
  Debug.fail("Class decorators should not have a third synthetic argument.");
  return unknownType;
  }
- 
+
  if (node.kind === SyntaxKind.Parameter) {
  // The `parameterIndex` for a parameter decorator is always a number
  return numberType;
  }
- 
+
  if (node.kind === SyntaxKind.PropertyDeclaration) {
  Debug.fail("Property decorators should not have a third synthetic argument.");
  return unknownType;
  }
- 
+
  if (node.kind === SyntaxKind.MethodDeclaration ||
  node.kind === SyntaxKind.GetAccessor ||
  node.kind === SyntaxKind.SetAccessor) {
@@ -8782,7 +8782,7 @@ namespace ts {
  Debug.fail("Unsupported decorator target.");
  return unknownType;
  }
- 
+
  /**
  * Returns the effective argument type for the provided argument to a decorator.
  */