Add newlines to EOF in C++ .tmpl files.

mojo/public/tools/bindings/generators/cpp_templates/module.cc.tmpl

 // NOTE: This file was generated by the Mojo bindings generator.
 #include "{{module.path}}.h"
 
 #include <math.h>
 #include <ostream>
 
 #include "mojo/public/cpp/bindings/lib/array_serialization.h"
 #include "mojo/public/cpp/bindings/lib/bindings_serialization.h"
 #include "mojo/public/cpp/bindings/lib/bounds_checker.h"
 #include "mojo/public/cpp/bindings/lib/map_data_internal.h"
@@ skipping 10 matching lines @@
 namespace {{namespace}} {
 {%- endfor %}
 
 // --- Interface definitions ---
 {%- for interface in interfaces %}
 {%-   include "interface_definition.tmpl" %}
 {%- endfor %}
 
 {%- for namespace in namespaces_as_array|reverse %}
 }  // namespace {{namespace}}
-{%- endfor %}
+{%- endfor %}