fix faulty null checks

app/scripts/controllers/permissions/permissionsLog.js

@@ -325,6 +325,7 @@ export default class PermissionsLogController {
   getRequestedMethods (request) {
     if (
       !request.params ||
+      !request.params[0] ||
       typeof request.params[0] !== 'object' ||
       Array.isArray(request.params[0])
     ) {
@@ -392,7 +393,7 @@ function getLastIndexOfObjectArray (array, key, value) {
 
     for (let i = array.length - 1; i >= 0; i--) {
 
-      if (typeof array[i] !== 'object') {
+      if (!array[i] || typeof array[i] !== 'object') {
         throw new Error(`Encountered non-Object element at index ${i}`)
       }
 

test/unit/app/controllers/transactions/tx-controller-test.js

@@ -57,7 +57,7 @@ describe('Transaction Controller', function () {
       const exposedState = txController.getState()
       assert('unapprovedTxs' in exposedState, 'state should have the key unapprovedTxs')
       assert('selectedAddressTxList' in exposedState, 'state should have the key selectedAddressTxList')
-      assert(typeof exposedState.unapprovedTxs === 'object', 'should be an object')
+      assert(exposedState && typeof exposedState.unapprovedTxs === 'object', 'should be an object')
       assert(Array.isArray(exposedState.selectedAddressTxList), 'should be an array')
     })
   })