false: Port to LibMain

Userland/Utilities/CMakeLists.txt

@@ -91,6 +91,7 @@ target_link_libraries(echo LibMain)
 target_link_libraries(env LibMain)
 target_link_libraries(errno LibMain)
 target_link_libraries(expr LibRegex LibMain)
+target_link_libraries(false LibMain)
 target_link_libraries(fdtdump LibDeviceTree LibMain)
 target_link_libraries(fgrep LibMain)
 target_link_libraries(file LibGfx LibIPC LibCompress LibMain)

Userland/Utilities/false.cpp

@@ -4,9 +4,9 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <sys/cdefs.h>
+#include <LibMain/Main.h>
 
-int main(int, char**)
+ErrorOr<int> serenity_main(Main::Arguments)
 {
     return 1;
 }