[modules] Make ModuleInfoEntry a Struct rather than FixedArray.

src/ast/ast-types.cc

Index: src/ast/ast-types.cc
diff --git a/src/ast/ast-types.cc b/src/ast/ast-types.cc
index f6dfea2c83acc1b9225012b735ee6dd0b2fbe823..49551dd7fa1744298966462f424d84be63694ea9 100644
--- a/src/ast/ast-types.cc
+++ b/src/ast/ast-types.cc
@@ -284,6 +284,7 @@ AstType::bitset AstBitsetType::Lub(i::Map* map) {
     case CODE_TYPE:
     case PROPERTY_CELL_TYPE:
     case MODULE_TYPE:
+    case MODULE_INFO_ENTRY_TYPE:
       return kOtherInternal & kTaggedPointer;
 
     // Remaining instance types are unsupported for now. If any of them do