MINOR: [C++] Fix clang-format of arrow/util/tracing_internal.h

[wgtmac]

Rationale for this change

It seems that arrow/util/tracing_internal.h has escaped the linter check.

What changes are included in this PR?

Apply clang-format to arrow/util/tracing_internal.h.

Are these changes tested?

Pass CI.

Are there any user-facing changes?

No.

[wgtmac]

All changes made by hooks:
diff --git a/cpp/src/arrow/util/tracing_internal.h b/cpp/src/arrow/util/tracing_internal.h
index f2c5f3ffe..6ed7[31](https://github.com/apache/arrow/actions/runs/12395219387/job/34600415615?pr=45067#step:6:32)599 100644
--- a/cpp/src/arrow/util/tracing_internal.h
+++ b/cpp/src/arrow/util/tracing_internal.h
@@ -135,11 +135,12 @@ opentelemetry::nostd::shared_ptr<opentelemetry::trace::Span>& RewrapSpan(
 opentelemetry::trace::StartSpanOptions SpanOptionsWithParent(
     const util::tracing::Span& parent_span);
 
-#  define START_SPAN(target_span, ...)                                           \
-    auto opentelemetry_scope##__LINE__ = ::arrow::internal::tracing::GetTracer() \
-        -> WithActiveSpan(::arrow::internal::tracing::RewrapSpan(                \
-            target_span.details.get(),                                           \
-            ::arrow::internal::tracing::GetTracer()->StartSpan(__VA_ARGS__)))
+#  define START_SPAN(target_span, ...)                           \
+    auto opentelemetry_scope##__LINE__ =                         \
+        ::arrow::internal::tracing::GetTracer()->WithActiveSpan( \
+            ::arrow::internal::tracing::RewrapSpan(              \
+                target_span.details.get(),                       \
+                ::arrow::internal::tracing::GetTracer()->StartSpan(__VA_ARGS__)))
 
 #  define START_SCOPED_SPAN(target_span, ...)                    \
     ::arrow::internal::tracing::Scope(                           \
Error: Process completed with exit code 1.

Fine, it seems that my clang-format version is incompatible with the pre-commit check.

[pitrou]

Yeah, I think a specific version of clang-format is required if you want to match what pre-commit expects.

[wgtmac]

Let me fix it on my end.