If a SPIR-V type has been replaced due to aliasing don't set custom name

* If we have e.g. Input Float* and Output Float* when we patch they will both
  become Private Float* and we collapse the types together. When that happens,
  don't rename names for the losing type, just remove names.

renderdoc/driver/vulkan/vk_postvs.cpp

@@ -333,7 +333,8 @@ static void ConvertToMeshOutputCompute(const ShaderReflection &refl, const SPIRV
       SPIRVId id = it.word(1);
       std::string oldName = (const char *)&it.word(2);
       editor.Remove(it);
-      editor.SetName(id, ("emulated_" + oldName).c_str());
+      if(typeReplacements.find(id) == typeReplacements.end())
+        editor.SetName(id, ("emulated_" + oldName).c_str());
     }
 
     // remove any OpName for the old entry points