Don't store in the drive pads without a hash

www/common/cryptpad-common.js

@@ -299,10 +299,14 @@ define([
         pads.forEach(function (pad, i) {
             if (pad && typeof(pad) === 'object') {
                 var hash = checkObjectData(pad);
-                if (!hash || !common.parseHash(hash)) { return; }
+                if (!hash || !common.parseHash(hash)) {
+                    console.error("[Cryptpad.checkRecentPads] pad had unexpected value", pad);
+                    getStore().removeData(i);
+                    return;
+                }
                 return pad;
             }
-            console.error("[Cryptpad.migrateRecentPads] pad had unexpected value");
+            console.error("[Cryptpad.checkRecentPads] pad had unexpected value", pad);
             getStore().removeData(i);
         });
     };
@@ -571,7 +575,7 @@ define([
                 return pad;
             });
 
-            if (!contains) {
+            if (!contains && href) {
                 var data = makePad(href, name);
                 getStore().pushData(data, function (e) {
                     if (e) {

www/common/userObject.js

@@ -883,6 +883,11 @@ define([
                         toClean.push(el);
                         return;
                     }
+                    if (!el.href) {
+                        debug("Rmoving an element in filesData with a missing href.", el);
+                        toClean.push(el);
+                        return;
+                    }
                     if (rootFiles.indexOf(el.href) === -1) {
                         debug("An element in filesData was not in ROOT, TEMPLATE or TRASH.", el);
                         var name = el.title || NEW_FILE_NAME;