[io] use safer overload of TKey::ReadKeyBuffer() in TFile::Recover()

This prevents potential oob stack reads in case of corrupted TFiles

Author: silverweed

io/io/src/TFile.cxx

@@ -2171,7 +2171,7 @@ Int_t TFile::Recover()
       if (seekpdir == fSeekDir && tclass && !tclass->InheritsFrom(TFile::Class())
                                && strcmp(classname,"TBasket")) {
          TKey *key = new TKey(this);
-         key->ReadKeyBuffer(bufread);
+         key->ReadKeyBuffer(bufread, sizeof(header));
          if (!strcmp(key->GetName(),"StreamerInfo")) {
             fSeekInfo = seekkey;
             SafeDelete(fInfoCache);