Fix shared library build after r17696

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index a71b33bf33fa2ee5be2596acd08c3706cda83ba0..e855c85e30b0e24697a90928f531594f62559dbc 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -1683,9 +1683,11 @@ int Shell::Main(int argc, char* argv[]) {
   v8::V8::SetArrayBufferAllocator(&array_buffer_allocator);
   int result = 0;
   Isolate* isolate = Isolate::GetCurrent();
+#ifndef V8_SHARED
   v8::ResourceConstraints constraints;
   constraints.ConfigureDefaults(i::OS::TotalPhysicalMemory());
   v8::SetResourceConstraints(isolate, &constraints);
+#endif
   DumbLineEditor dumb_line_editor(isolate);
   {
     Initialize(isolate);