[AST] Temporarily turn off minor assert to avoid source compat regression

Author: lorentey

include/swift/AST/LifetimeDependence.h

@@ -247,8 +247,12 @@ class LifetimeDependenceInfo {
  targetIndex(targetIndex) {
  assert(this->isImmortal() || inheritLifetimeParamIndices ||
  scopeLifetimeParamIndices);
- assert(!inheritLifetimeParamIndices ||
- !inheritLifetimeParamIndices->isEmpty());
+ // FIXME: This assert can trigger when Optional/Result support ~Escapable use (rdar://147765187)
+ // assert(!inheritLifetimeParamIndices ||
+ // !inheritLifetimeParamIndices->isEmpty());
+ if (inheritLifetimeParamIndices && inheritLifetimeParamIndices->isEmpty()) {
+ inheritLifetimeParamIndices = nullptr;
+ }
  assert(!scopeLifetimeParamIndices || !scopeLifetimeParamIndices->isEmpty());
  assert((!addressableParamIndices
  || !conditionallyAddressableParamIndices