Update to get win32 build pass

Author: Cynthia Jiang

cmake/firebase_unity_version.cmake

@@ -25,7 +25,7 @@ set(FIREBASE_INSTANCE_ID_POD_VERSION "4.3.1"
 
 # https://github.com/googlesamples/unity-jar-resolver
 set(FIREBASE_UNITY_JAR_RESOLVER_VERSION
-  "1.2.164"
+  "1.2.165"
    CACHE STRING
   "Version tag of Play Services Resolver to download and use (no trailing .0)"
 )

external/CMakeLists.txt

@@ -17,15 +17,16 @@
 
 mono_add_external_dll(unity_editor_cs "${UNITY_EDITOR_DLL}")
 mono_add_external_dll(unity_engine_cs "${UNITY_ENGINE_DLL}")
-
 if(APPLE)
   mono_add_external_dll(unity_ios_extensions_xcode_cs "${UNITY_EDITOR_IOS_XCODE_DLL}")
 endif()
 
 # Dont pack libraries shipped with unity
 unity_pack_skip(unity_editor_cs)
 unity_pack_skip(unity_engine_cs)
-unity_pack_skip(unity_ios_extensions_xcode_cs)
+if(APPLE)
+  unity_pack_skip(unity_ios_extensions_xcode_cs)
+endif()
 
 mono_add_library(google_minijson_cs
   MODULE