Descriptors with error types can override each other

compiler/testData/lazyResolve/namespaceComparator/OverrideWithErrors.kt

@@ -0,0 +1,9 @@
+package test
+
+open class A {
+  open fun foo(a: E) {}
+}
+
+class B : A() {
+  override fun foo(a: E) {}
+}

compiler/testData/lazyResolve/namespaceComparator/OverrideWithErrors.txt

@@ -0,0 +1,10 @@
+namespace test
+
+internal open class test.A : jet.Any {
+    public final /*constructor*/ fun <init>(): test.A
+    internal open fun foo(/*0*/ a: [ERROR : E]): jet.Tuple0
+}
+internal final class test.B : test.A {
+    public final /*constructor*/ fun <init>(): test.B
+    internal open override /*1*/ fun foo(/*0*/ a: [ERROR : E]): jet.Tuple0
+}