Fix compiler warnings after rL339649.

Differential Revision: https://reviews.llvm.org/D49980

llvm-svn: 339994
diff --git a/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp b/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
index 713fa6e..4c469e8 100644
--- a/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
+++ b/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
@@ -52,9 +52,8 @@
     return clang::TTK_Union;
   case PDB_UdtType::Interface:
     return clang::TTK_Interface;
-  default:
-    llvm_unreachable("unsuported PDB UDT type");
   }
+  llvm_unreachable("unsuported PDB UDT type");
 }
 
 lldb::Encoding TranslateBuiltinEncoding(PDB_BuiltinType type) {
@@ -213,9 +212,8 @@
     return eAccessProtected;
   case PDB_MemberAccess::Public:
     return eAccessPublic;
-  default:
-    return eAccessNone;
   }
+  return eAccessNone;
 }
 
 AccessType GetDefaultAccessibilityForUdtKind(PDB_UdtType udt_kind) {
@@ -226,9 +224,8 @@
   case PDB_UdtType::Class:
   case PDB_UdtType::Interface:
     return eAccessPrivate;
-  default:
-    llvm_unreachable("unsupported PDB UDT type");
   }
+  llvm_unreachable("unsupported PDB UDT type");
 }
 
 AccessType GetAccessibilityForUdt(const PDBSymbolTypeUDT &udt) {