Utilities: Port realpath to LibMain

Author: https://github.com/ryangjchandler
Commit: 65de0d2910
Pull-request: https://github.com/SerenityOS/serenity/pull/12377
Reviewed-by: https://github.com/AtkinsSJ ✅

Userland/Utilities/realpath.cpp

@@ -5,15 +5,14 @@
  */
 
 #include <LibCore/ArgsParser.h>
+#include <LibCore/System.h>
+#include <LibMain/Main.h>
 #include <stdio.h>
 #include <unistd.h>
 
-int main(int argc, char** argv)
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    if (pledge("stdio rpath", nullptr) < 0) {
-        perror("pledge");
-        return 1;
-    }
+    TRY(Core::System::pledge("stdio rpath"));
 
     const char* path;
 
@@ -21,7 +20,7 @@ int main(int argc, char** argv)
     args_parser.set_general_help(
         "Show the 'real' path of a file, by resolving all symbolic links along the way.");
     args_parser.add_positional_argument(path, "Path to resolve", "path");
-    args_parser.parse(argc, argv);
+    args_parser.parse(arguments);
 
     char* value = realpath(path, nullptr);
     if (value == nullptr) {