Merge pull request #18712 from xedin/fix-asan-failure-in-cs

[ConstraintSystem] Don't try to eagerly deallocate fixes
diff --git a/lib/Sema/CSSimplify.cpp b/lib/Sema/CSSimplify.cpp
index 2f1b1d3..1340c78 100644
--- a/lib/Sema/CSSimplify.cpp
+++ b/lib/Sema/CSSimplify.cpp
@@ -4930,8 +4930,6 @@
 
   if (existingFix == Fixes.end())
     Fixes.push_back(fix);
-  else // if fix couldn't be recorded, it means that it's no longer needed.
-    Allocator.Deallocate(fix);
 
   return false;
 }