Remove extra if case.

[rnk]

lgtm

Testing offline showed that it was impossible to reach the return with a real global variable with an enumeration type.

clang/lib/CodeGen/CGDebugInfo.cpp

void CGDebugInfo::EmitGlobalVariable(const ValueDecl *VD, const APValue &Init) {
   assert(DebugKind >= codegenoptions::LimitedDebugInfo);
   if (VD->hasAttr<NoDebugAttr>())
     return;
   auto Align = getDeclAlignIfRequired(VD, CGM.getContext());
   // Create the descriptor for the variable.
   llvm::DIFile *Unit = getOrCreateFile(VD->getLocation());
   StringRef Name = VD->getName();
   llvm::DIType *Ty = getOrCreateType(VD->getType(), Unit);
+
+  // Do not use global variables for enums.
   if (const auto *ECD = dyn_cast<EnumConstantDecl>(VD)) {
     const auto *ED = cast<EnumDecl>(ECD->getDeclContext());
     assert(isa<EnumType>(ED->getTypeForDecl()) && "Enum without EnumType?");
-    Ty = getOrCreateType(QualType(ED->getTypeForDecl(), 0), Unit);
-  }
-  // Do not use global variables for enums.
-  //
-  // FIXME: why not?
-  if (Ty->getTag() == llvm::dwarf::DW_TAG_enumeration_type)
     return;
+  }
+
   // Do not emit separate definitions for function local const/statics.
   if (isa<FunctionDecl>(VD->getDeclContext()))
     return;
   VD = cast<ValueDecl>(VD->getCanonicalDecl());
   auto *VarD = cast<VarDecl>(VD);
   if (VarD->isStaticDataMember()) {
     auto *RD = cast<RecordDecl>(VarD->getDeclContext());
     getDeclContextDescriptor(VarD);