Synchronization/CMakeLists.txt: build Cell.swift for Embedded Wasm

Author: MaxDesiatov

stdlib/public/Synchronization/CMakeLists.txt

@@ -194,12 +194,12 @@ if(SWIFT_SHOULD_BUILD_EMBEDDED_STDLIB)
     endif()
 
     set(SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES)
-    list(APPEND SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES ${SWIFT_SYNCHRONIZATION_ATOMIC_SOURCES})
 
     if("${arch}" MATCHES "wasm32")
-      list(APPEND SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES
-        ${SWIFT_SYNCHRONIZATION_WASM_SOURCES}
-      )
+      list(APPEND SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES ${SWIFT_SYNCHRONIZATION_SOURCES})
+      list(APPEND SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES ${SWIFT_SYNCHRONIZATION_WASM_SOURCES})
+    else()
+      list(APPEND SWIFT_SYNCHRONIZATION_EMBEDDED_SOURCES ${SWIFT_SYNCHRONIZATION_ATOMIC_SOURCES})
     endif()
 
     add_swift_target_library_single(