Lowercase the tag name to match the rest of dwarf.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153691 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Dwarf.cpp b/lib/Support/Dwarf.cpp
index b317e49..5c59a3e 100644
--- a/lib/Support/Dwarf.cpp
+++ b/lib/Support/Dwarf.cpp
@@ -95,7 +95,7 @@
     return "DW_TAG_GNU_template_parameter_pack";
   case DW_TAG_GNU_formal_parameter_pack:
     return "DW_TAG_GNU_formal_parameter_pack";
-  case DW_TAG_APPLE_Property:            return "DW_TAG_APPLE_property";
+  case DW_TAG_APPLE_property:            return "DW_TAG_APPLE_property";
   }
   return 0;
 }