Merge pull request #2323 from mgreter/bugfix/issue-2321

Fix another null pointer access

Author: mgreter

src/bind.cpp

@@ -167,8 +167,15 @@ namespace Sass {
       else if (a->is_rest_argument()) {
         // normal param and rest arg
         List_Obj arglist = Cast<List>(a->value());
+        if (!arglist) {
+          if (Expression_Obj arg = Cast<Expression>(a->value())) {
+            arglist = SASS_MEMORY_NEW(List, a->pstate(), 1);
+            arglist->append(arg);
+          }
+        }
+
         // empty rest arg - treat all args as default values
-        if (!arglist->length()) {
+        if (!arglist || !arglist->length()) {
           break;
         } else {
           if (arglist->length() > LP - ip && !ps->has_rest_parameter()) {