Fix for the load error that is happening with dart_no_snapshot.

runtime/bin/dartutils.cc

Index: runtime/bin/dartutils.cc
===================================================================
--- runtime/bin/dartutils.cc	(revision 38484)
+++ runtime/bin/dartutils.cc	(working copy)
@@ -781,30 +781,31 @@
 
 Dart_Handle DartUtils::PrepareForScriptLoading(const char* package_root,
                                                Dart_Handle builtin_lib) {
+  // First ensure all required libraries are available.
+  Dart_Handle url = NewString(kAsyncLibURL);
+  DART_CHECK_VALID(url);
+  Dart_Handle async_lib = Dart_LookupLibrary(url);
+  DART_CHECK_VALID(async_lib);
+  Dart_Handle io_lib = Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
+
+  // We need to ensure that all the scripts loaded so far are finalized
+  // as we are about to invoke some Dart code below to setup closures.
+  Dart_Handle result = Dart_FinalizeLoading(false);
+  DART_CHECK_VALID(result);
+
   // Setup the internal library's 'internalPrint' function.
   Dart_Handle print = Dart_Invoke(
       builtin_lib, NewString("_getPrintClosure"), 0, NULL);
-  Dart_Handle url = NewString(kInternalLibURL);
+  url = NewString(kInternalLibURL);
   DART_CHECK_VALID(url);
   Dart_Handle internal_lib = Dart_LookupLibrary(url);
   DART_CHECK_VALID(internal_lib);
-  Dart_Handle result = Dart_SetField(internal_lib,
-                                     NewString("_printClosure"),
-                                     print);
+  result = Dart_SetField(internal_lib,
+                         NewString("_printClosure"),
+                         print);
   DART_CHECK_VALID(result);
 
   // Setup the 'timer' factory.
-  url = NewString(kAsyncLibURL);
-  DART_CHECK_VALID(url);
-  Dart_Handle async_lib = Dart_LookupLibrary(url);
-  DART_CHECK_VALID(async_lib);
-  Dart_Handle io_lib = Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
-
-  // We need to ensure that all the scripts loaded so far are finalized
-  // as we are about to invoke some Dart code below to setup closures.
-  result = Dart_FinalizeLoading(false);
-  DART_CHECK_VALID(result);
-
   Dart_Handle timer_closure =
       Dart_Invoke(io_lib, NewString("_getTimerFactoryClosure"), 0, NULL);
   Dart_Handle args[1];