Bug 1122330 - Part 1: Identify Empty String to Encode String TLV into TR Properly. r=echen

--HG--
extra : histedit_source : 1d2eccd1949b6a13837289843cdb7db186dee90b

dom/system/gonk/ril_worker.js

@@ -3022,7 +3022,7 @@ RilObject.prototype = {
         text = response.input;
       }
 
-      if (text) {
+      if (text !== undefined) {
         GsmPDUHelper.writeHexOctet(COMPREHENSIONTLV_TAG_TEXT_STRING |
                                    COMPREHENSIONTLV_FLAG_CR);