Move ipv4Int to top level

app/src/main/java/org/thoughtcrime/securesms/util/IP2Country.kt

@@ -12,14 +12,9 @@ import org.session.libsignal.utilities.ThreadUtils
 import java.io.File
 import java.io.FileOutputStream
 import java.io.FileReader
-import java.util.SortedMap
 import java.util.TreeMap
 
-class IP2Country private constructor(private val context: Context) {
+private fun ipv4Int(ip: String): Int {
-    private val pathsBuiltEventReceiver: BroadcastReceiver
-    val countryNamesCache = mutableMapOf<String, String>()
-
-    private fun Ipv4Int(ip: String): Int {
     var result = 0L
     var currentValue = 0L
     var octetIndex = 0
@@ -41,13 +36,17 @@ class IP2Country private constructor(private val context: Context) {
     return result.toInt()
 }
 
+class IP2Country private constructor(private val context: Context) {
+    private val pathsBuiltEventReceiver: BroadcastReceiver
+    val countryNamesCache = mutableMapOf<String, String>()
+
     private val ipv4ToCountry: TreeMap<Int, Int?> by lazy {
         val file = loadFile("geolite2_country_blocks_ipv4.csv")
         CSVReader(FileReader(file.absoluteFile)).use { csv ->
             csv.skip(1)
 
             csv.asSequence().associateTo(TreeMap()) { cols ->
-                Ipv4Int(cols[0]).toInt() to cols[1].toIntOrNull()
+                ipv4Int(cols[0]).toInt() to cols[1].toIntOrNull()
             }
         }
     }
@@ -114,7 +113,7 @@ class IP2Country private constructor(private val context: Context) {
         // return early if cached
         countryNamesCache[ip]?.let { return it }
 
-        val ipInt = Ipv4Int(ip)
+        val ipInt = ipv4Int(ip)
         val bestMatchCountry = ipv4ToCountry.floorEntry(ipInt)?.let { (_, code) ->
             if (code != null) {
                 countryToNames[code]