[NI] Fix substitution in builder-inference for empty common system

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/components/InferenceSession.kt

@@ -40,7 +40,7 @@ interface InferenceSession {
         lambda: ResolvedLambdaAtom,
         initialStorage: ConstraintStorage,
         diagnosticsHolder: KotlinDiagnosticsHolder
-    ): Map<TypeConstructor, UnwrappedType>
+    ): Map<TypeConstructor, UnwrappedType>?
 
     fun writeOnlyStubs(callInfo: SingleCallResolutionResult): Boolean
     fun callCompleted(resolvedAtom: ResolvedAtom): Boolean

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/components/PostponedArgumentsAnalyzer.kt

@@ -159,6 +159,10 @@ class PostponedArgumentsAnalyzer(
             val storageSnapshot = c.getBuilder().currentStorage()
 
             val postponedVariables = inferenceSession.inferPostponedVariables(lambda, storageSnapshot, diagnosticHolder)
+            if (postponedVariables == null) {
+                c.getBuilder().removePostponedVariables()
+                return
+            }
 
             for ((constructor, resultType) in postponedVariables) {
                 val variableWithConstraints = storageSnapshot.notFixedTypeVariables[constructor] ?: continue

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/inference/ConstraintSystemBuilder.kt

@@ -34,6 +34,7 @@ interface ConstraintSystemOperation {
     fun registerVariable(variable: TypeVariableMarker)
     fun markPostponedVariable(variable: TypeVariableMarker)
     fun unmarkPostponedVariable(variable: TypeVariableMarker)
+    fun removePostponedVariables()
 
     fun addSubtypeConstraint(lowerType: KotlinTypeMarker, upperType: KotlinTypeMarker, position: ConstraintPosition)
     fun addEqualityConstraint(a: KotlinTypeMarker, b: KotlinTypeMarker, position: ConstraintPosition)

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/inference/model/NewConstraintSystemImpl.kt

@@ -103,6 +103,10 @@ class NewConstraintSystemImpl(
         storage.postponedTypeVariables -= variable
     }
 
+    override fun removePostponedVariables() {
+        storage.postponedTypeVariables.clear()
+    }
+
     override fun addSubtypeConstraint(lowerType: KotlinTypeMarker, upperType: KotlinTypeMarker, position: ConstraintPosition) =
         constraintInjector.addInitialSubtypeConstraint(
             apply { checkState(State.BUILDING, State.COMPLETION, State.TRANSACTION) },