Merge branch 'master' of github.com:hcatlin/libsass

node.cpp

@@ -93,15 +93,18 @@ namespace Sass {
       buf << ";" << endl;
       break;
     case clauses:
+      if (children.size() > 0) {
         buf << " {" << endl;
         for (int i = 0; i < children.size(); ++i)
           children[i].emit_expanded_css(buf, prefix);
         buf << "}" << endl;
+      }
       for (int i = 0; i < opt_children.size(); ++i)
         opt_children[i].emit_expanded_css(buf, prefix);
       break;
     case ruleset:
       buf << prefix;
+      if (children[1].children.size() > 0)
         children[0].emit_expanded_css(buf, prefix);
       string newprefix(prefix.empty() ? prefix : prefix + " ");
       children[1].emit_expanded_css(buf, newprefix + string(children[0].token));