Synched contacts handling

app/src/main/kotlin/com/tutpro/baresip/Contact.kt

@@ -89,9 +89,9 @@ sealed class Contact {
             return null
         }
 
-        // Return URIs of contact name
         fun contactUris(name: String, tel: Boolean = false): ArrayList<String> {
             val uris = ArrayList<String>()
+            synchronized(BaresipService.contacts) {
                 for (c in BaresipService.contacts)
                     when (c) {
                         is BaresipContact -> {
@@ -115,10 +115,12 @@ sealed class Contact {
                             }
                         }
                     }
+            }
             return uris
         }
 
         fun findContact(uri: String): Contact? {
+            synchronized(BaresipService.contacts) {
                 for (c in BaresipService.contacts)
                     when (c) {
                         is BaresipContact -> {
@@ -127,13 +129,17 @@ sealed class Contact {
                                     return c
                         }
                         is AndroidContact -> {
-                        val cleanUri = uri.filterNot{setOf('-', ' ', '(', ')').contains(it)}
+                            val cleanUri = uri.filterNot { setOf('-', ' ', '(', ')').contains(it) }
                             for (u in c.uris)
-                            if (Utils.uriMatch(u.filterNot{setOf('-', ' ', '(', ')').contains(it)},
-                                    cleanUri))
+                                if (Utils.uriMatch(
+                                        u.filterNot { setOf('-', ' ', '(', ')').contains(it) },
+                                        cleanUri
+                                    )
+                                )
                                     return c
                         }
                     }
+            }
             return null
         }