Kapt3: Convert reference to KMutableMap.Entry correctly (KT-17567)

plugins/kapt3/testData/converter/kt17567.kt

@@ -0,0 +1,6 @@
+package test
+
+internal class MutableEntry<K, V>(
+        private val internal: MutableMap<K, V>,
+        override val key: K, value: V
+): MutableMap.MutableEntry<K, V>

plugins/kapt3/testData/converter/kt17567.txt

@@ -0,0 +1,16 @@
+package test;
+
+public final class MutableEntry<K extends java.lang.Object, V extends java.lang.Object> implements java.util.Map.Entry<K, V>, kotlin.jvm.internal.markers.KMutableMap.Entry {
+    private final java.util.Map<K, V> internal = null;
+    private final K key = null;
+
+    @java.lang.Override()
+    public K getKey() {
+        return null;
+    }
+
+    public MutableEntry(@org.jetbrains.annotations.NotNull()
+    java.util.Map<K, V> internal, K key, V value) {
+        super();
+    }
+}