Fix kotlinFunctionToJavaEquivalent to ignore nullability

Author: tamasvajk

java/kotlin-extractor/src/main/kotlin/KotlinUsesExtractor.kt

@@ -1276,7 +1276,7 @@ open class KotlinUsesExtractor(
                         javaClass.declarations.findSubType<IrFunction> { decl ->
                             decl.name.asString() == jvmName &&
                             decl.valueParameters.size == f.valueParameters.size &&
-                            decl.valueParameters.zip(f.valueParameters).all { p -> erase(p.first.type) == erase(p.second.type) }
+                            decl.valueParameters.zip(f.valueParameters).all { p -> erase(p.first.type).classifierOrNull == erase(p.second.type).classifierOrNull }
                         } ?:
                         // Or check property accessors:
                         (f.propertyIfAccessor as? IrProperty)?.let { kotlinProp ->

java/ql/test/kotlin/library-tests/classes/CONSISTENCY/javaEquivalent.expected

@@ -12,8 +12,6 @@
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Byte.toInt in java.lang.Byte |
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Byte.toInt in java.lang.Byte |
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Byte.toInt in java.lang.Byte |
-| file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Enum.<init> in java.lang.Enum |
-| file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Enum.<init> in java.lang.Enum |
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Int.and in java.lang.Integer |
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Int.dec in java.lang.Integer |
 | file://:0:0:0:0 | Couldn't find a Java equivalent function to kotlin.Int.inv in java.lang.Integer |