Give a proper error message when a command line option is defined more than

once (ie, at two different places in the source, not two times on the
commandline).

llvm-svn: 51771

llvm/lib/Support/CommandLine.cpp

@@ -120,7 +120,7 @@ static void GetOptionInfo(std::vector<Option*> &PositionalOpts,
       if (!OptionsMap.insert(std::pair<std::string,Option*>(OptionNames[i],
                                                             O)).second) {
         cerr << ProgramName << ": CommandLine Error: Argument '"
-             << OptionNames[0] << "' defined more than once!\n";
+             << OptionNames[i] << "' defined more than once!\n";
       }
     }