message: fix for MSVC build
diff: @@ -93,7 +93,6 @@ public class CesiumRuntime : ModuleRules
  "tinyxml2",
  "uriparser",
  "ktx_read",
  - "webpdecoder"
  };
  // Use our own copy of MikkTSpace on Android.
  @@ -112,6 +111,15 @@ public class CesiumRuntime : ModuleRules
  libs = libs.Concat(new string[] { "tidy" }).ToArray();
  }
  + if (Target.Platform == UnrealTargetPlatform.Win64)
  + {
  + libs = libs.Concat(new string[] { "libwebpdecoder" }).ToArray();
  + }
  + else
  + {
  + libs = libs.Concat(new string[] { "webpdecoder" }).ToArray();
  + }
  +
  if (preferDebug)
  {
  // We prefer Debug, but might still use Release if that's all that's available.
  