Save a few bytes

I figure since this seems to be the most used setInterval hook, even shaving a few bytes off the file size could make a difference in aggregate :)

Before making this change I built the project locally. Even after compiling, the unnecessary undefined remains in the source.

I tried not to make any changes that would affect readability.

| File size | Compiled | Gzipped | |---------------|----------|-----------| | Before | 1.08 KiB | 479 bytes | | After | 1.04 KiB | 468 bytes |

Merge pull request #369 from rileyjshaw/patch-1

Save a few bytes

I figure since this seems to be the most used setInterval hook, even shaving a few bytes off the file size could make a difference in aggregate :)

Before making this change I built the project locally. Even after compiling, the unnecessary undefined remains in the source.

I tried not to make any changes that would affect readability.

| File size | Compiled | Gzipped | |---------------|----------|-----------| | Before | 1.08 KiB | 479 bytes | | After | 1.04 KiB | 468 bytes |