Ensure that the parser has actually found a field before setting fieldFound to true.

Author: sleavitt

lib/http.js

@@ -53,7 +53,9 @@ var parsers = new FreeList('parsers', 1000, function () {
 
   parser.onHeaderValue = function (b, start, len) {
     var slice = b.toString('ascii', start, start+len);
-    parser.fieldFound = true;
+    if (parser.field && !parser.fieldFound) {
+      parser.fieldFound = true;
+    }
     if (parser.value) {
       parser.value += slice;
     } else {