Fix comment.

llvm-svn: 185984
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index f03e983..9f77b51 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -834,7 +834,7 @@
 
   if (BTy.getTag() == dwarf::DW_TAG_unspecified_type) {
     Buffer.setTag(dwarf::DW_TAG_unspecified_type);
-    // Unspecified types has only name, nothing else.
+    // An unspecified type only has a name attribute.
     return;
   }