innerInstructions also has omitempty

[linuskendall]

               "innerInstructions" : [
                  {
                     "instructions" : [
                        {
                           "programIdIndex" : 7,
                           "data" : "111112ERtMhCsUhexYb6gBHHhLLRx9YPwhXKuAo3Pc8VGnh8C6GTeheXQLLZVMfXR9jB6M",
                           "accounts" : [
                              0,
                              6
                           ]
                        }
                     ]
                  },
                  {
                     "index" : 1,
                     "instructions" : [
                        {
                           "accounts" : [
                              0,
                              1
                           ],
                           "programIdIndex" : 7,
                           "data" : "111112ERtMhCsUhexYb6gBHHhLLRx9YPwhXKuAo3Pc8VGnh8C6GTeheXQLLZVMfXR9jB6M"
                        }
                     ]
                  },
                  {
                     "index" : 2,
                     "instructions" : [
                        {
                           "programIdIndex" : 7,
                           "data" : "111112ERtMhCsUhexYb6gBHHhLLRx9YPwhXKuAo3Pc8VGnh8C6GTeheXQLLZVMfXR9jB6M",
                           "accounts" : [
                              0,
                              5
                           ]
                        }
                     ]

index: 0 is omitted