Fix clang_format_code.sh errors.

include/grpcpp/server_builder_impl.h

@@ -51,7 +51,7 @@ class ServerBuilderPluginTest;
 
 namespace experimental {
 class CallbackGenericService;
-}  
+}
 }  // namespace grpc
 namespace grpc_impl {
 
@@ -325,7 +325,8 @@ class ServerBuilder {
   std::vector<std::unique_ptr<grpc::ServerBuilderPlugin>> plugins_;
   grpc_resource_quota* resource_quota_;
   grpc::AsyncGenericService* generic_service_;
-  grpc::experimental::CallbackGenericService* callback_generic_service_{nullptr};
+  grpc::experimental::CallbackGenericService* callback_generic_service_{
+      nullptr};
   struct {
     bool is_set;
     grpc_compression_level level;