Simplify whitespace handling in build/ Jinja templates

Source/build/scripts/templates/StylePropertyShorthand.h.tmpl

Index: Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
diff --git a/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl b/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
index 5466ed7efea83bdd5f3160f8d7d80a4fb153171e..e94af5384a119fdb2f0db0a36e651d8f19c220e1 100644
--- a/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
+++ b/Source/build/scripts/templates/StylePropertyShorthand.h.tmpl
@@ -65,11 +65,13 @@ private:
     unsigned m_length;
     CSSPropertyID m_shorthandID;
 };
+{# FIXME: remove extra blank line #}
+
 
 {% for property_id, property in properties.items() %}
-{%- set camel_case_name = property.camel_case_name %}
+{% set camel_case_name = property.camel_case_name %}
 const StylePropertyShorthand& {{ camel_case_name }}Shorthand();
-{%- endfor %}
+{% endfor %}
 
 // Returns an empty list if the property is not a shorthand, otherwise the list of longhands for parsing.
 const StylePropertyShorthand& parsingShorthandForProperty(CSSPropertyID);