protect against SysClose() being called with fD < 0 (happens in case of

net or webfiles).


git-svn-id: http://root.cern.ch/svn/root/trunk@20805 27541ba8-7e3a-0410-8455-c3a389f83636

io/src/TFile.cxx

@@ -2760,6 +2760,7 @@ Int_t TFile::SysClose(Int_t fd)
 {
    // Interface to system close. All arguments like in POSIX close().
 
+   if (fd < 0) return 0;
    return ::close(fd);
 }