fillMessageKeys: only check for >1000 if message not from yourself

People leave their laptops closed for weeks at a time, and get this
error, since their other devices are sending messages to it constantly:

"Too many message keys for chain"

And it seems to be really hard to fix once you're in this state. Sync
messages no longer show up from the device that got into this state.

FREEBIE

dist/libsignal-protocol.js

@@ -36274,7 +36274,10 @@ SessionCipher.prototype = {
     });
   },
   fillMessageKeys: function(chain, counter) {
-      if (Object.keys(chain.messageKeys).length >= 1000) {
+      var ourNumber = textsecure.storage.user.getNumber();
+      var theirNumber = this.remoteAddress.toString().split('.')[0];
+
+      if (ourNumber !== theirNumber && Object.keys(chain.messageKeys).length >= 1000) {
           console.log("Too many message keys for chain");
           return Promise.resolve(); // Stalker, much?
       }

src/SessionCipher.js

@@ -240,7 +240,10 @@ SessionCipher.prototype = {
     });
   },
   fillMessageKeys: function(chain, counter) {
-      if (Object.keys(chain.messageKeys).length >= 1000) {
+      var ourNumber = textsecure.storage.user.getNumber();
+      var theirNumber = this.remoteAddress.toString().split('.')[0];
+
+      if (ourNumber !== theirNumber && Object.keys(chain.messageKeys).length >= 1000) {
           console.log("Too many message keys for chain");
           return Promise.resolve(); // Stalker, much?
       }