Fixing the same oversight in the master branch.

1712181d · Aaron Leung · f7c3321b · 1712181d
Commit 1712181d authored Oct 02, 2012 by Aaron Leung
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eval_apply.cpp eval_apply.cpp +1 -1

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--- a/eval_apply.cpp
+++ b/eval_apply.cpp
@@ -178,7 +178,7 @@ namespace Sass {
      } break;
      case Node::list: {
-        if (expr.should_eval()) expr[0] = eval(expr[0], prefix, env, f_env, new_Node, ctx);
+        if (expr.should_eval() && expr.size() > 0) expr[0] = eval(expr[0], prefix, env, f_env, new_Node, ctx);
        return expr;
      } break;