[cfe-dev] Patch for PR23175, Infinite loop iterating Objective-C method declarations

[Tom Honermann]

Could someone be so kind as to review the patches attached to PR23175 
and, assuming no concerns, commit them?

Bug 23175 - Infinite loop iterating Objective-C method declarations in 
categories when the AST was deserialized from an .ast file
https://llvm.org/bugs/show_bug.cgi?id=23175

Thank you,
Tom.