code style improvements

Google.Protobuf/Collections/ReadOnlyDictionary.vb

@@ -30,12 +30,10 @@
 ' OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #End Region
 
-Imports System
-Imports System.Collections
-Imports System.Collections.Generic
 Imports System.Runtime.InteropServices
 
 Namespace Google.Protobuf.Collections
+
     ''' <summary>
     ''' Read-only wrapper around another dictionary.
     ''' </summary>

Google.Protobuf/Compatibility/PropertyInfoExtensions.vb

@@ -34,20 +34,22 @@ Imports System.Reflection
 Imports System.Runtime.CompilerServices
 
 Namespace Google.Protobuf.Compatibility
+
     ''' <summary>
     ''' Extension methods for <see cref="PropertyInfo"/>, effectively providing
     ''' the familiar members from previous desktop framework versions while
     ''' targeting the newer releases, .NET Core etc.
     ''' </summary>
     Friend Module PropertyInfoExtensions
+
         ''' <summary>
         ''' Returns the public getter of a property, or null if there is no such getter
         ''' (either because it's read-only, or the getter isn't public).
         ''' </summary>
         <Extension()>
         Friend Function GetGetMethod(target As PropertyInfo) As MethodInfo
-#If DOTNET35
-            var method = target.GetGetMethod();
+#If DOTNET35 Then
+            Dim method = target.GetGetMethod()
 #Else
             Dim method = target.GetMethod
 #End If
@@ -60,8 +62,8 @@ Namespace Google.Protobuf.Compatibility
         ''' </summary>
         <Extension()>
         Friend Function GetSetMethod(target As PropertyInfo) As MethodInfo
-#If DOTNET35
-            var method = target.GetSetMethod();
+#If DOTNET35 Then
+            Dim method = target.GetSetMethod()
 #Else
             Dim method = target.SetMethod
 #End If

Google.Protobuf/Compatibility/TypeExtensions.vb

@@ -30,12 +30,13 @@
 ' OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #End Region
 
-Imports System
 Imports System.Reflection
 Imports System.Runtime.CompilerServices
 
-#If Not DOTNET35
+#If Not DOTNET35 Then
+
 Namespace Google.Protobuf.Compatibility
+
     ''' <summary>
     ''' Provides extension methods on Type that just proxy to TypeInfo.
     ''' These are used to support the new type system from .NET 4.5, without
@@ -45,6 +46,7 @@ Namespace Google.Protobuf.Compatibility
     ''' evaluate each new use appropriately.
     ''' </summary>
     Friend Module TypeExtensions
+
         ''' <summary>
         ''' See https://msdn.microsoft.com/en-us/library/system.type.isassignablefrom
         ''' </summary>

Google.Protobuf/ICustomDiagnosticMessage.vb

@@ -31,6 +31,7 @@
 #End Region
 
 Namespace Google.Protobuf
+
     ''' <summary>
     ''' A message type that has a custom string format for diagnostic purposes.
     ''' </summary>
@@ -53,6 +54,7 @@ Namespace Google.Protobuf
     ''' </remarks>
     Public Interface ICustomDiagnosticMessage
         Inherits IMessage
+
         ''' <summary>
         ''' Returns a string representation of this object, for diagnostic purposes.
         ''' </summary>