Fixed GRPC method name generation.

Change-Id: I827b7e9aee1edb77752322455f7b6fafac16fb1d
Tested: on Linux.

src/idl_parser.cpp

@@ -149,8 +149,7 @@ std::string Namespace::GetFullyQualifiedName(const std::string &name,
     }
     stream << components[i];
   }
-
-  stream << "." << name;
+  if (name.length()) stream << "." << name;
   return stream.str();
 }
 

tests/monster_test.grpc.fb.cc

@@ -18,8 +18,8 @@ namespace MyGame {
 namespace Example {
 
 static const char* MonsterStorage_method_names[] = {
-  "/MyGame.Example..MonsterStorage/Store",
-  "/MyGame.Example..MonsterStorage/Retrieve",
+  "/MyGame.Example.MonsterStorage/Store",
+  "/MyGame.Example.MonsterStorage/Retrieve",
 };
 
 std::unique_ptr< MonsterStorage::Stub> MonsterStorage::NewStub(const std::shared_ptr< ::grpc::ChannelInterface>& channel, const ::grpc::StubOptions& options) {