Add missing newline to printing of Symbol

Change-Id: I9a3c43418b17447741b5886d4706ccd1db9b38e6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2933662
Auto-Submit: Georg Neis <neis@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74943}

src/diagnostics/objects-printer.cc

@@ -698,6 +698,7 @@ void Symbol::SymbolPrint(std::ostream& os) {
     os << " (" << PrivateSymbolToName() << ")";
   }
   os << "\n - private: " << is_private();
+  os << "\n";
 }
 
 void DescriptorArray::DescriptorArrayPrint(std::ostream& os) {