LibCore: Add ProcessWindows.cpp to CMakeLists

Author: https://github.com/R-Goc
Commit: https://github.com/LadybirdBrowser/ladybird/commit/bebf787c367
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2505
Reviewed-by: https://github.com/gmta ✅

Libraries/LibCore/CMakeLists.txt

@@ -44,7 +44,6 @@ set(SOURCES
     MappedFile.cpp
     MimeData.cpp
     Notifier.cpp
-    Process.cpp
     Resource.cpp
     ResourceImplementation.cpp
     ResourceImplementationFile.cpp
@@ -58,10 +57,12 @@ set(SOURCES
 
 if (WIN32)
     list(APPEND SOURCES
+        ProcessWindows.cpp
         AnonymousBufferWindows.cpp
         EventLoopImplementationWindows.cpp)
 else()
     list(APPEND SOURCES
+        Process.cpp
         AnonymousBuffer.cpp
         EventLoopImplementationUnix.cpp)
 endif()