[globalisel][legalizer] Fix a fallthrough case in the unittests debug printing

llvm-svn: 323711
diff --git a/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp b/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
index a661d92..42371e6 100644
--- a/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
+++ b/llvm/unittests/CodeGen/GlobalISel/LegalizerInfoTest.cpp
@@ -28,7 +28,7 @@
   case Libcall: OS << "Libcall"; break;
   case Custom: OS << "Custom"; break;
   case Unsupported: OS << "Unsupported"; break;
-  case NotFound: OS << "NotFound";
+  case NotFound: OS << "NotFound"; break;
   case UseLegacyRules: OS << "UseLegacyRules"; break;
   }
   return OS;