Merge pull request #1400 from jskeet/fix-internal

Fix to csharp_options - initialize internal_access to false.
diff --git a/src/google/protobuf/compiler/csharp/csharp_options.h b/src/google/protobuf/compiler/csharp/csharp_options.h
index f25812c..426fb3b 100644
--- a/src/google/protobuf/compiler/csharp/csharp_options.h
+++ b/src/google/protobuf/compiler/csharp/csharp_options.h
@@ -44,7 +44,8 @@
   Options() :
       file_extension(".cs"),
       base_namespace(""),
-      base_namespace_specified(false) {
+      base_namespace_specified(false),
+      internal_access(false) {
   }
   // Extension of the generated file. Defaults to ".cs"
   string file_extension;