Release Android crop sources rejected after account changes

tools/chatgui-android/app/src/main/java/com/utun/chat/data/AvatarRepository.kt

@@ -437,7 +437,7 @@ class AvatarRepository(context: Context) {
         ensureGroup(group, true)
     }
 
-    fun editProfile(server: Long, source: File?, expectedAccount: Long, crop: AvatarCrop? = null) = edit("profile", expectedAccount) { epoch ->
+    fun editProfile(server: Long, source: File?, expectedAccount: Long, crop: AvatarCrop? = null) = edit("profile", expectedAccount,source) { epoch ->
         val uid = account
         val prepared=if (source==null) null else try {
             withContext(Dispatchers.IO) { AvatarAssets.prepare(source,directory(uid),requireNotNull(crop)) }
@@ -462,13 +462,22 @@ class AvatarRepository(context: Context) {
         _members.value.keys.map { it.group }.distinct().forEach { replicate(it) }
     }
 
-    private fun edit(key: String, expectedAccount: Long, block: suspend (Long) -> Unit) {
+    private fun edit(key: String, expectedAccount: Long, rejectedSource: File? = null, block: suspend (Long) -> Unit) {
         if (account == 0L) start()
         if (expectedAccount == 0L || expectedAccount != account) {
             log("WARN", "Ignored stale picker result target=$key expected=${AvatarProtocol.hex(expectedAccount)} actual=${AvatarProtocol.hex(account)}")
+            rejectedSource?.let { file -> scope.launch(Dispatchers.IO) {
+                if (!file.delete()) log("WARN", "Cannot remove stale editor source=$file")
+            } }
+            return
+        }
+        if (account == 0L || _edits.value[key] == AvatarEditState.WORKING) {
+            log("WARN", "Rejected concurrent avatar edit target=$key")
+            rejectedSource?.let { file -> scope.launch(Dispatchers.IO) {
+                if (!file.delete()) log("WARN", "Cannot remove rejected editor source=$file")
+            } }
             return
         }
-        if (account == 0L || _edits.value[key] == AvatarEditState.WORKING) return
         val epoch = generation; editTokens[key] = epoch
         _edits.value += key to AvatarEditState.WORKING
         scope.launch {