Silence a bunch of implicit fallthrough warnings

llvm-svn: 321114
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp b/llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp
index 17f2973..6a6b7fc 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFAcceleratorTable.cpp
@@ -83,6 +83,7 @@
            !FormValue.isFormClass(DWARFFormValue::FC_Flag)) ||
           FormValue.getForm() == dwarf::DW_FORM_sdata)
         return false;
+      break;
     default:
       break;
     }