Fixing presubmit error

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 7133b7ad2aa1abc99103b281634debae7fd3d979..ce48dc9ff180d971a46a13748d4985ebe5f48d48 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -159,7 +159,7 @@ Handle<Value> Shell::Write(const Arguments& args) {
       printf(" ");
     }
     v8::String::Utf8Value str(args[i]);
-    fwrite(*str, sizeof(char), str.length(), stdout);
+    fwrite(*str, sizeof(**str), str.length(), stdout);
   }
   return Undefined();
 }