tools: remove duplication of coff_aux_file

Now that COFF::coff_aux_file is defined, use that rather than redefining the
type locally.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206140 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-readobj/COFFDumper.cpp

@@ -428,13 +428,6 @@ static const EnumEntry<unsigned> UnwindOpInfo[] = {
   { "R15", 15 }
 };
 
-// Some additional COFF structures not defined by llvm::object.
-namespace {
-  struct coff_aux_file_record {
-    char FileName[18];
-  };
-} // namespace
-
 static uint64_t getOffsetOfLSDA(const Win64EH::UnwindInfo& UI) {
   return static_cast<const char*>(UI.getLanguageSpecificData())
          - reinterpret_cast<const char*>(&UI);
@@ -979,13 +972,12 @@ void COFFDumper::printSymbol(const SymbolRef &Sym) {
       W.printBinary("Unused", makeArrayRef(Aux->Unused));
 
     } else if (Symbol->isFileRecord()) {
-      const coff_aux_file_record *Aux;
+      const coff_aux_file *Aux;
       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))
         break;
 
       DictScope AS(W, "AuxFileRecord");
       W.printString("FileName", StringRef(Aux->FileName));
-
     } else if (Symbol->isSectionDefinition()) {
       const coff_aux_section_definition *Aux;
       if (error(getSymbolAuxData(Obj, Symbol + I, Aux)))