Yep - that's exactly it. Surprisingly no, it didn't leak. The only sign that there was an issue was the cracking. They had grind away as much of the rusted metal as they could or it would crack again in the not so distant future. As it is, I may only have another couple of years before it does it again.That looks like the bit under the plastic trim on the (US) passenger side front corner. Bugger, that would definitely spoil your day. Did it leak.