Add assertions that users of nsDependentC?String meet the requirements of nsAFlatC?String. Add nsDependentSingleFragmentC?Substring for users that don't. Additional cleanup after bug 100214. b=104651 r=jag sr=scc

git-svn-id: svn://10.0.0.236/trunk@107556 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/htmlparser/src/nsParser.cpp

@@ -2278,7 +2278,8 @@ nsParser::DetectMetaTag(const char* aBytes,
 
   // Fast and loose parsing to determine if we have a complete
   // META tag in this block, looking upto 2k into it.
-  nsDependentCString str(aBytes, PR_MIN(aLen, 2048));
+  const nsASingleFragmentCString& str =
+      Substring(aBytes, aBytes + PR_MIN(aLen, 2048));
   nsReadingIterator<char> begin, end;
   
   str.BeginReading(begin);