Remove unused variable in mksnapshot.cc.

Review URL: https://chromiumcodereview.appspot.com/10559078

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11874 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mksnapshot.cc

@@ -345,7 +345,7 @@ int main(int argc, char** argv) {
       fprintf(stderr, "Failure compiling '%s' (see above)\n", name);
       exit(1);
     }
-    Handle<Value> ret = script->Run();
+    script->Run();
     if (try_catch.HasCaught()) {
       fprintf(stderr, "Failure running '%s'\n", name);
       Local<Message> message = try_catch.Message();