LibRegex: Print OpCode_Repeat's offset as ssize_t

Author: https://github.com/alimpfard
Commit: https://github.com/LadybirdBrowser/ladybird/commit/f8092455e20
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2410
Reviewed-by: https://github.com/LucasChollet
Reviewed-by: https://github.com/konradekk

Libraries/LibRegex/RegexByteCode.h

@@ -787,7 +787,13 @@ public:
     ByteString arguments_string() const override
     {
         auto reps = id() < state().repetition_marks.size() ? state().repetition_marks.at(id()) : 0;
-        return ByteString::formatted("offset={} count={} id={} rep={}, sp: {}", offset(), count() + 1, id(), reps + 1, state().string_position);
+        return ByteString::formatted("offset={} [&{}] count={} id={} rep={}, sp: {}",
+            static_cast<ssize_t>(offset()),
+            state().instruction_position - offset(),
+            count() + 1,
+            id(),
+            reps + 1,
+            state().string_position);
     }
 };