Typos.

Author: bartchr808

include/swift/AST/Attr.h

@@ -1510,8 +1510,6 @@ class DifferentiableAttr final
   FuncDecl *VJPFunction = nullptr;
   /// The differentiation parameters' indices, resolved by the type checker.
   AutoDiffParameterIndices *ParameterIndices = nullptr;
-  /// States whether the function is linear (optional).
-  bool linear = false;
   /// The trailing where clause, if it exists.
   TrailingWhereClause *WhereClause = nullptr;
   /// The requirements for autodiff associated functions. Resolved by the type

lib/AST/Attr.cpp

@@ -1337,7 +1337,7 @@ DifferentiableAttr::DifferentiableAttr(ASTContext &context, bool implicit,
                                        Optional<DeclNameWithLoc> vjp,
                                        ArrayRef<Requirement> requirements)
     : DeclAttribute(DAK_Differentiable, atLoc, baseRange, implicit),
-      JVP(std::move(jvp)), VJP(std::move(vjp)), ParameterIndices(indices)  {
+      JVP(std::move(jvp)), VJP(std::move(vjp)), ParameterIndices(indices) {
   setRequirements(context, requirements);
 }
 

lib/Parse/ParseDecl.cpp

@@ -986,7 +986,7 @@ bool Parser::parseDifferentiableAttributeArguments(
   } else {
     linear = false;
   }
-  
+
   // If 'withRespectTo' is used, make the user change it to 'wrt'.
   if (Tok.is(tok::identifier) && Tok.getText() == "withRespectTo") {
     SourceRange withRespectToRange(Tok.getLoc(), peekToken().getLoc());

test/AutoDiff/differentiable_attr_parse.swift

@@ -164,4 +164,4 @@ func const6(_ x: Float) -> (Float, (Float) -> Float) {
 @differentiable(wrt: x, vjp: const6, linear) // expected-error {{expected a function specifier label, e.g. 'wrt:', 'jvp:', or 'vjp:'}}
 func slope5(_ x: Float) -> Float {
   return 6 * x
-}
+}