Subzero. Fixes memory leaks.

src/IceELFObjectWriter.cpp

 //===- subzero/src/IceELFObjectWriter.cpp - ELF object file writer --------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines the writer for ELF relocatable object files.
@@ skipping 369 matching lines @@
                              Section->getCurrentSize(), SymbolSize);
     StrTab->add(MangledName);
     if (!Var->hasNonzeroInitializer()) {
       assert(ST == BSS || ST == ROData);
       if (ST == ROData)
         Section->appendZeros(Str, SymbolSize);
       else
         Section->setSize(Section->getCurrentSize() + SymbolSize);
     } else {
       assert(ST != BSS);
-      for (VariableDeclaration::Initializer *Init : Var->getInitializers()) {
+      for (const std::unique_ptr<VariableDeclaration::Initializer> &Init :
+           Var->getInitializers()) {
         switch (Init->getKind()) {
         case VariableDeclaration::Initializer::DataInitializerKind: {
           const auto Data = llvm::cast<VariableDeclaration::DataInitializer>(
-                                Init)->getContents();
+                                Init.get())->getContents();
           Section->appendData(Str, llvm::StringRef(Data.data(), Data.size()));
           break;
         }
         case VariableDeclaration::Initializer::ZeroInitializerKind:
           Section->appendZeros(Str, Init->getNumBytes());
           break;
         case VariableDeclaration::Initializer::RelocInitializerKind: {
           const auto Reloc =
-              llvm::cast<VariableDeclaration::RelocInitializer>(Init);
+              llvm::cast<VariableDeclaration::RelocInitializer>(Init.get());
           AssemblerFixup NewFixup;
           NewFixup.set_position(Section->getCurrentSize());
           NewFixup.set_kind(RelocationKind);
           const bool SuppressMangling = true;
           NewFixup.set_value(Ctx.getConstantSym(
               Reloc->getOffset(), Reloc->getDeclaration()->mangleName(&Ctx),
               SuppressMangling));
           RelSection->addRelocation(NewFixup);
           Section->appendRelocationOffset(Str, RelSection->isRela(),
                                           Reloc->getOffset());
@@ skipping 200 matching lines @@
   if (ELF64) {
     writeELFHeaderInternal<true>(ShOffset, ShStrTab->getNumber(),
                                  AllSections.size());
   } else {
     writeELFHeaderInternal<false>(ShOffset, ShStrTab->getNumber(),
                                   AllSections.size());
   }
 }
 
 } // end of namespace Ice