Fix bugs

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/contact/ContactList.kt

@@ -37,7 +37,7 @@ class ContactList<C : Contact>(@MiraiInternalAPI val delegate: LockFreeLinkedLis
 
 operator fun <C : Contact> LockFreeLinkedList<C>.get(id: Long): C {
     forEach { if (it.id == id) return it }
-    throw NoSuchElementException("No such contact with id $id")
+    throw NoSuchElementException("No such contact: $id")
 }
 
 fun <C : Contact> LockFreeLinkedList<C>.getOrNull(id: Long): C? {

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/io/InputUtils.kt

@@ -114,6 +114,8 @@ fun Input.readTLVMap(expectingEOF: Boolean = true, tagSize: Int, suppressDuplica
                 duplicating value=${this.readUShortLVByteArray().toUHexString()}
                 """.trimIndent()
                 )
+            } else {
+                this.discardExact(this.readShort().toInt() and 0xffff)
             }
         } else {
             try {

mirai-core/src/jvmMain/kotlin/net/mamoe/mirai/utils/io/PlatformSocket.kt

@@ -23,7 +23,11 @@ actual class PlatformSocket : Closeable {
     actual val isOpen: Boolean
         get() = socket.isConnected
 
-    override fun close() = socket.close()
+    override fun close() {
+        if (::socket.isInitialized) {
+            socket.close()
+        }
+    }
 
     @PublishedApi
     internal lateinit var writeChannel: BufferedOutputStream