Re-add an over-zealously removed break.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148296 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaInit.cpp b/lib/Sema/SemaInit.cpp
index 8a4f683..b6033a5 100644
--- a/lib/Sema/SemaInit.cpp
+++ b/lib/Sema/SemaInit.cpp
@@ -5540,6 +5540,7 @@
         llvm_unreachable("Conversion did not fail!");
     }
   }
+  break;
 
   case FK_DefaultInitOfConst:
     if (Entity.getKind() == InitializedEntity::EK_Member &&