KT-8011 Compiler crashes on attempt to create local class inside lambda

- use StackValue from upper-level context if local lookup fails

 #KT-8011 Fixed

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -2022,6 +2022,11 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> implem
             return stackValueForLocal(descriptor, index);
         }
 
+        return findCapturedValue(descriptor);
+    }
+
+    @Nullable
+    public StackValue findCapturedValue(@NotNull DeclarationDescriptor descriptor) {
         if (context instanceof ConstructorContext) {
             return lookupCapturedValueInConstructorParameters(descriptor);
         }

compiler/backend/src/org/jetbrains/kotlin/codegen/context/LocalLookup.java

@@ -159,10 +159,17 @@ public interface LocalLookup {
 
         @NotNull
         public StackValue outerValue(@NotNull EnclosedValueDescriptor d, @NotNull ExpressionCodegen codegen) {
-            int idx = codegen.lookupLocalIndex(d.getDescriptor());
-            assert idx != -1;
-
-            return StackValue.local(idx, d.getType());
+            DeclarationDescriptor declarationDescriptor = d.getDescriptor();
+            int idx = codegen.lookupLocalIndex(declarationDescriptor);
+            if (idx >= 0) {
+                return StackValue.local(idx, d.getType());
+            }
+            else {
+                assert declarationDescriptor != null : "No declaration descriptor for " + d;
+                StackValue capturedValue = codegen.findCapturedValue(declarationDescriptor);
+                assert capturedValue != null : "Unresolved captured value for " + d;
+                return capturedValue;
+            }
         }
     }
 }