backend: add two more tests for finally

backend.native/tests/codegen/try/finally10.kt

@@ -0,0 +1,12 @@
+fun main(args : Array<String>) {
+    while (true) {
+        try {
+            continue
+        } finally {
+            println("Finally")
+            break
+        }
+    }
+
+    println("After")
+}

backend.native/tests/codegen/try/finally11.kt

@@ -0,0 +1,16 @@
+fun main(args : Array<String>) {
+    try {
+        try {
+            return
+        } catch (e: Error) {
+            println("Catch 1")
+        } finally {
+            println("Finally")
+            throw Error()
+        }
+    } catch (e: Error) {
+        println("Catch 2")
+    }
+
+    println("Done")
+}