I ran into a type " a a " in a comment in snapmgr.c, and found that there are four other places that've made the same typo, by the grep command. And in one of those places, I found yet another typo. Please find attached a patch.
Just while on this topic, I had a quick look at the results from the regex \b(\w+)\s+\1\b which finds duplicate words. After sifting through the false positives I found a few more. Patch attached.