Move clearOutputSections earlier. NFC.

llvm-svn: 305333
diff --git a/lld/ELF/Writer.cpp b/lld/ELF/Writer.cpp
index d41baec..1112ad2 100644
--- a/lld/ELF/Writer.cpp
+++ b/lld/ELF/Writer.cpp
@@ -1151,6 +1151,12 @@
   removeUnusedSyntheticSections(OutputSections);
 
   sortSections();
+  if (!Script->Opt.HasSections)
+    Script->fabricateDefaultCommands();
+  for (BaseCommand *Base : Script->Opt.Commands)
+    if (auto *Cmd = dyn_cast<OutputSectionCommand>(Base))
+      OutputSectionCommands.push_back(Cmd);
+  clearOutputSections();
 
   // This is a bit of a hack. A value of 0 means undef, so we set it
   // to 1 t make __ehdr_start defined. The section number is not
@@ -1158,18 +1164,12 @@
   Out::ElfHeader->SectionIndex = 1;
 
   unsigned I = 1;
-  for (OutputSection *Sec : OutputSections) {
+  for (OutputSectionCommand *Cmd : OutputSectionCommands) {
+    OutputSection *Sec = Cmd->Sec;
     Sec->SectionIndex = I++;
     Sec->ShName = InX::ShStrTab->addString(Sec->Name);
   }
 
-  if (!Script->Opt.HasSections)
-    Script->fabricateDefaultCommands();
-  for (BaseCommand *Base : Script->Opt.Commands)
-    if (auto *Cmd = dyn_cast<OutputSectionCommand>(Base))
-      OutputSectionCommands.push_back(Cmd);
-  clearOutputSections();
-
   // Binary and relocatable output does not have PHDRS.
   // The headers have to be created before finalize as that can influence the
   // image base and the dynamic section on mips includes the image base.