Kernel: Add implicit auto qualifiers in Syscalls

Author: https://github.com/Hendiadyoin1
Commit: c860e0ab95
Pull-request: https://github.com/SerenityOS/serenity/pull/11294

Kernel/Syscalls/statvfs.cpp

@@ -58,7 +58,7 @@ ErrorOr<FlatPtr> Process::sys$fstatvfs(int fd, statvfs* buf)
     REQUIRE_PROMISE(stdio);
 
     auto description = TRY(fds().open_file_description(fd));
-    auto inode = description->inode();
+    auto const* inode = description->inode();
     if (inode == nullptr)
         return ENOENT;