[6.2][silgen] Fix a small typo bug I found on inspection. #80970
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We are performing a cast instead of a dyn_cast in an if statement. This will assert on failure rather than fall through. It seems to be an obvious typo. I checked in the actual commit in question that introduced it and the intention was to be a dyn_cast. rdar://149698148 (cherry picked from commit 132eb93)
gottesmm
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Explanation: While looking at making some changes in ResultPlan.cpp, I noticed
that we were performing:
which is very suspicious since cast<> fails on failure rather than failing like
a dyn_cast would. After reviewing the git history, I discovered that this was
clearly a thinko where dyn_cast was actually meant to be used:
Scope: Just converts a cast that was meant to be a dyn_cast to actually be a
dyn_cast.
Resolves: rdar://149698148
Main PR: #80952
Risk: Low.
Testing: N/A. Correct on sight.
Reviewer: @nate-chandler