Silence a bunch of implicit fallthrough warnings

llvm-svn: 321115
diff --git a/clang/lib/Sema/SemaExprMember.cpp b/clang/lib/Sema/SemaExprMember.cpp
index 03ddcc0..dd516ea 100644
--- a/clang/lib/Sema/SemaExprMember.cpp
+++ b/clang/lib/Sema/SemaExprMember.cpp
@@ -251,7 +251,7 @@
   case IMA_Field_Uneval_Context:
     Diag(R.getNameLoc(), diag::warn_cxx98_compat_non_static_member_use)
       << R.getLookupNameInfo().getName();
-    // Fall through.
+    LLVM_FALLTHROUGH;
   case IMA_Static:
   case IMA_Abstract:
   case IMA_Mixed_StaticContext: