[wasm] Remove the use of the "external" bit on OldFunctions section.

src/compiler/wasm-compiler.cc

Index: src/compiler/wasm-compiler.cc
diff --git a/src/compiler/wasm-compiler.cc b/src/compiler/wasm-compiler.cc
index e37a98757a94b579d74b9b00041366ac2fa04e65..4187ced36c4d5cd4e14d882e47f3067f459cd555 100644
--- a/src/compiler/wasm-compiler.cc
+++ b/src/compiler/wasm-compiler.cc
@@ -3016,7 +3016,8 @@ class WasmCompilationUnit {
     ok_ = job_->OptimizeGraph() == CompilationJob::SUCCEEDED;
     // TODO(bradnelson): Improve histogram handling of size_t.
     // TODO(ahaas): The counters are not thread-safe at the moment.
-    //    isolate_->counters()->wasm_compile_function_peak_memory_bytes()->AddSample(
+    //    isolate_->counters()->wasm_compile_function_peak_memory_bytes()
+    // ->AddSample(
     //        static_cast<int>(jsgraph->graph()->zone()->allocation_size()));
 
     if (FLAG_trace_wasm_decode_time) {