removed unnecessary else if clause in function Dicer.prototype._oninfo.

The else if clause was exactly the opposite of the if clause.

lib/Dicer.js

@@ -183,7 +183,7 @@ Dicer.prototype._oninfo = function(isMatch, data, start, end) {
       shouldWriteMore = this._part.push(data.slice(start, end));
       if (!shouldWriteMore)
         this._pause = true;
-    } else if (!this._isPreamble && this._inHeader) {
+    } else {
       if (buf)
         this._hparser.push(buf);
       r = this._hparser.push(data.slice(start, end));