[Build] Drop suppressions from ^KT-79453

See `6b448121`.


See `6b448121`.

Also replace a funny `else if` check with a more conventional/readable
`if`. See `cafee851`.

Author: lunakoly

compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/TypeUtils.kt

@@ -994,8 +994,8 @@ fun ConeKotlinType.canBeNull(
     considerTypeVariableBounds: Boolean = true,
     visited: MutableSet<ConeKotlinType> = mutableSetOf(),
 ): Boolean {
+    if (!visited.add(this)) return false
     return when (this) {
-        else if !visited.add(this) -> false
         is ConeFlexibleType -> upperBound.canBeNull(session, considerTypeVariableBounds, visited)
         is ConeDefinitelyNotNullType -> false
         is ConeTypeParameterType -> isMarkedNullable || this.lookupTag.typeParameterSymbol.resolvedBounds.all {

compiler/frontend/cfg/src/org/jetbrains/kotlin/cfg/ControlFlowInfo.kt

@@ -35,8 +35,6 @@ internal constructor(
 ) : ImmutableMap<K, D> by map, ReadOnlyControlFlowInfo<K, D> {
     protected abstract fun copy(newMap: ImmutableMap<K, D>): S
 
-    // KT-79453: Drop the suppression after the next bootstrap update
-    @Suppress("CAST_NEVER_SUCCEEDS")
     override fun put(key: K, value: D): S = put(key, value, this[key].getOrElse(null as D?))
 
     /**
@@ -50,8 +48,6 @@ internal constructor(
         return copy(map.put(key, value))
     }
 
-    // KT-79453: Drop the suppression after the next bootstrap update
-    @Suppress("CAST_NEVER_SUCCEEDS")
     override fun getOrNull(key: K): D? = this[key].getOrElse(null as D?)
     override fun asMap() = this