add to existing icc/clang block

Signed-off-by: crueter <crueter@eden-emu.dev>

src/CMakeLists.txt

@@ -141,7 +141,7 @@ else()
         -Wno-missing-field-initializers
     )
 
-    if (CXX_CLANG OR CXX_ICC) # Clang or AppleClang
+    if (CXX_CLANG OR CXX_ICC OR CXX_APPLE) # Clang, AppleClang, or Intel C++
         if (NOT MSVC)
             add_compile_options(
                 -Werror=shadow-uncaptured-local
@@ -165,10 +165,6 @@ else()
         add_compile_options("-stdlib=libc++")
     endif()
 
-    if (CXX_APPLE)
-        add_compile_options(-Wno-unused-private-field)
-    endif()
-
     # GCC bugs
     if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "11" AND CXX_GCC)
         # These diagnostics would be great if they worked, but are just completely broken