[master] update the doc for MasterToken::StringRegion to match the latest code.

the removed part was obsolete due to a later change (which is described
in the next paragraph of the doc).  keeping the sentence will just
confuse readers.

should be trivial enough, so I'm committing this at my discretion.

diff --git a/src/lib/dns/master_lexer.h b/src/lib/dns/master_lexer.h
index 35586feb0f4a75ba7cfb31eadb4fd76e89584f36..99b433f8b500e439378f01e8617f6e30e1d70ceb 100644 (file)
--- a/src/lib/dns/master_lexer.h
+++ b/src/lib/dns/master_lexer.h
@@ -87,8 +87,7 @@ public:
     ///
     /// Any character can be stored in the valid range of the region.
     /// In particular, there can be a nul character (\0) in the middle of
-    /// the region.  On the other hand, it is not ensured that the string
-    /// is nul-terminated.  So the usual string manipulation API may not work
+    /// the region.  So the usual string manipulation API may not work
     /// as expected.
     ///
     /// The `MasterLexer` implementation ensures that there are at least