[cleanup] Global variable declarations are never hole initialized

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 2d0a08bbdfc295255ac17868d0b0f143c765abee..b9c6f6b81b0f09bb4ecf6dda93595cd917841ed3 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -708,11 +708,9 @@ void FullCodeGenerator::VisitVariableDeclaration(
   switch (variable->location()) {
     case VariableLocation::GLOBAL:
     case VariableLocation::UNALLOCATED:
+      DCHECK(!variable->binding_needs_init());
       globals_->Add(variable->name(), zone());
-      globals_->Add(variable->binding_needs_init()
-                        ? isolate()->factory()->the_hole_value()
-                        : isolate()->factory()->undefined_value(),
-                    zone());
+      globals_->Add(isolate()->factory()->undefined_value(), zone());
       break;
 
     case VariableLocation::PARAMETER: