Cosmetic changes ("set up" is a verb, "setup" is a noun).

src/factory.cc

Index: src/factory.cc
===================================================================
--- src/factory.cc	(revision 10367)
+++ src/factory.cc	(working copy)
@@ -698,7 +698,7 @@
   // Allocate the function
   Handle<JSFunction> function = NewFunction(name, the_hole_value());
 
-  // Setup the code pointer in both the shared function info and in
+  // Set up the code pointer in both the shared function info and in
   // the function itself.
   function->shared()->set_code(*code);
   function->set_code(*code);
@@ -729,7 +729,7 @@
   // Allocate the function.
   Handle<JSFunction> function = NewFunction(name, prototype);
 
-  // Setup the code pointer in both the shared function info and in
+  // Set up the code pointer in both the shared function info and in
   // the function itself.
   function->shared()->set_code(*code);
   function->set_code(*code);