Don Hinton 8249a8889d [CommandLine] Don't allow duplicate categories. ...

Summary:
This is a fix to D61574, r360179, that allowed duplicate
OptionCategory's.  This change adds a check to make sure a category can
only be added once even if the user passes it twice.

Reviewed By: MaskRay

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61972

llvm-svn: 360913

2019-05-16 16:25:13 +00:00

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