src: fix DEBUG_HTTP2 type arguments

Currently when building using --debug-http2 there are a number of compilation errors like the following:

In file included from ../src/node_http2.cc:3:
In file included from ../src/node_http2.h:6:
../src/node_http2_core-inl.h:43:32: error: too few arguments to function
call, single argument 'type'
      was not specified
              handle->TypeName(), len, message);

This commit adds the type argument to the calls.

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

Affected core subsystem(s)

src, http2