message: Fix friendly name of registers in cbuffer declarations in dxbc
diff: @@ -368,7 +368,16 @@ rdcstr Operand::toString(const DXBC::Reflection *reflection, ToString toStrFlags
  }
  }
  - if(cbuffer)
  + if(cbuffer && decl)
  + {
  + // for declarations don't look up the variable name. This actually lists the size in
  + // float4s of the constant buffer, and in the case of dead code elimination there could be
  + // variables past that point which have been removed which we'd find
  +
  + if(!cbuffer->name.empty())
  + str += " (" + cbuffer->name + ")";
  + }
  + else if(cbuffer)
  {
  // if the second index is constant then this is easy enough, we just find the matching
  // cbuffer variable and use its name, possibly rebasing the swizzle.
  