[cleanup] Global variable declarations are never hole initialized

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 36a0ecea8dcaba5dbf79d390e13a4eda544b9e73..00964b0199b5d14bf5a19bd7fb1795f537b0e792 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -1092,14 +1092,11 @@ void AstGraphBuilder::VisitVariableDeclaration(VariableDeclaration* decl) {
   bool hole_init = mode == CONST || mode == LET;
   switch (variable->location()) {
     case VariableLocation::GLOBAL:
-    case VariableLocation::UNALLOCATED: {
-      Handle<Oddball> value = variable->binding_needs_init()
-                                  ? isolate()->factory()->the_hole_value()
-                                  : isolate()->factory()->undefined_value();
+    case VariableLocation::UNALLOCATED:
+      DCHECK(!variable->binding_needs_init());
       globals()->push_back(variable->name());
-      globals()->push_back(value);
+      globals()->push_back(isolate()->factory()->undefined_value());
       break;
-    }
     case VariableLocation::PARAMETER:
     case VariableLocation::LOCAL:
       if (hole_init) {