Avoid ConcurrentModificationException

#KT-26384 Fixed

compiler/testData/codegen/boxInline/nonLocalReturns/tryFinally/kt26384.kt

@@ -0,0 +1,36 @@
+// IGNORE_BACKEND: JVM_IR
+// NO_CHECK_LAMBDA_INLINING
+// FILE: 1.kt
+
+package test
+
+public inline fun <T> T.myapply(block: T.() -> Unit): T {
+    block()
+    return this
+}
+
+
+// FILE: 2.kt
+import test.*
+
+class Test(val value: () -> String) {
+    fun test(): String {
+        try {
+            myapply {
+                try {
+                    return value()
+                } catch (e: Exception) {
+                } catch (e: Throwable) {
+                }
+            }
+        } finally {
+
+        }
+
+        return "fail"
+    }
+}
+
+fun box(): String {
+    return Test { "OK" }.test()
+}

compiler/testData/codegen/boxInline/nonLocalReturns/tryFinally/kt26384_2.kt

@@ -0,0 +1,55 @@
+// IGNORE_BACKEND: JVM_IR
+// NO_CHECK_LAMBDA_INLINING
+// FILE: 1.kt
+
+package test
+
+public inline fun <T> T.myapply(block: T.() -> Unit): T {
+    block()
+    return this
+}
+
+
+// FILE: 2.kt
+import test.*
+var globalResult = ""
+
+class Test(val value: () -> String) {
+    fun test(): String {
+        globalResult = ""
+        try {
+            myapply {
+                try {
+                    return value()
+                } catch (e: Exception) {
+                    globalResult += "Exception"
+                } catch (e: Throwable) {
+                    globalResult += "Throwable"
+                }
+            }
+        } finally {
+            globalResult += " Finally"
+        }
+
+        return globalResult
+    }
+}
+
+fun box(): String {
+    Test { throw RuntimeException("123")}.test()
+    if (globalResult != "Exception Finally") {
+        return "fail 1: $globalResult"
+    }
+
+    Test { throw Throwable("123") }.test()
+    if (globalResult != "Throwable Finally") {
+        return "fail 2: $globalResult"
+    }
+
+    val result = Test { "OK" }.test()
+
+    if (globalResult != " Finally") {
+        return "fail 3: $globalResult"
+    }
+    return result
+}