Addressed style PR feedback

src/Compilers/Core/Portable/Operations/Statement.cs

@@ -14,7 +14,7 @@ internal partial class VariableDeclaration : IVariableDeclaration
         public VariableDeclaration(ImmutableArray<ILocalSymbol> variables, IOperation initialValue, SyntaxNode syntax) :
             this(variables,
                 initialValue,
-                variables.IsDefault || (initialValue != null && initialValue.IsInvalid),
+                variables.IsDefaultOrEmpty || (initialValue != null && initialValue.IsInvalid),
                 syntax,
                 type: null,
                 constantValue: default(Optional<object>))

src/Compilers/VisualBasic/Portable/BoundTree/Statement.vb

@@ -1075,11 +1075,8 @@ Namespace Microsoft.CodeAnalysis.VisualBasic
                                                                              builder.Add(New VariableDeclaration(declaration.LocalSymbol, declaration.InitializerOpt, declaration.Syntax))
                                                                          ElseIf base.Kind = BoundKind.AsNewLocalDeclarations Then
                                                                              Dim asNewDeclarations = DirectCast(base, BoundAsNewLocalDeclarations)
-                                                                             Dim localSymbolsBuilder = ArrayBuilder(Of ILocalSymbol).GetInstance()
-                                                                             For Each asNewDeclaration In asNewDeclarations.LocalDeclarations
-                                                                                 localSymbolsBuilder.Add(asNewDeclaration.LocalSymbol)
-                                                                             Next
-                                                                             builder.Add(New VariableDeclaration(localSymbolsBuilder.ToImmutableAndFree(), asNewDeclarations.Initializer, asNewDeclarations.Syntax))
+                                                                             Dim localSymbols = asNewDeclarations.LocalDeclarations.SelectAsArray(Of ILocalSymbol)(Function(declaration) declaration.LocalSymbol)
+                                                                             builder.Add(New VariableDeclaration(localSymbols, asNewDeclarations.Initializer, asNewDeclarations.Syntax))
                                                                          End If
                                                                      Next
                                                                      Return builder.ToImmutableAndFree()