Fix fatal error catching on init

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/BotImpl.kt

@@ -148,7 +148,12 @@ abstract class BotImpl<N : BotNetworkHandler> constructor(
         }
 
         suspend fun doInit() {
-            tryNTimesOrException(2) {
+            tryNTimesOrException(2, onRetry = {
+                if (!isActive) {
+                    logger.error("Cannot init due to fatal error")
+                    logger.error(it)
+                }
+            }) {
                 if (it != 0) {
                     logger.warning("Init failed. Retrying in 3s...")
                     delay(3000)
@@ -156,7 +161,7 @@ abstract class BotImpl<N : BotNetworkHandler> constructor(
                 _network.init()
             }?.let {
                 network.logger.error(it)
-                logger.error("cannot init. some features may be affected")
+                logger.error("Cannot init. some features may be affected")
             }
         }
 

mirai-core/src/commonMain/kotlin/net.mamoe.mirai/utils/internal/tryNTimes.kt

@@ -16,7 +16,11 @@ internal expect fun Throwable.addSuppressedMirai(e: Throwable)
 
 @MiraiInternalAPI
 @Suppress("DuplicatedCode")
-internal inline fun <R> tryNTimesOrException(repeat: Int, block: (Int) -> R): Throwable? {
+internal inline fun <R> tryNTimesOrException(
+    repeat: Int,
+    onRetry: (Throwable?) -> Unit = {},
+    block: (Int) -> R
+): Throwable? {
     var lastException: Throwable? = null
 
     repeat(repeat) {
@@ -28,6 +32,7 @@ internal inline fun <R> tryNTimesOrException(repeat: Int, block: (Int) -> R): Th
                 lastException = e
             } else lastException!!.addSuppressedMirai(e)
         }
+        onRetry(lastException)
     }
 
     return lastException!!