Fixed bug in DFGBuilder + test

backend.native/tests/build.gradle

@@ -2266,6 +2266,11 @@ task inline_getClass(type: RunKonanTest) {
     source = "codegen/inline/getClass.kt"
 }
 
+task inline_statementAsLastExprInBlock(type: RunKonanTest) {
+    goldValue = "OK\n"
+    source = "codegen/inline/statementAsLastExprInBlock.kt"
+}
+
 task deserialized_inline0(type: RunKonanTest) {
     source = "serialization/deserialized_inline0.kt"
 }

backend.native/tests/codegen/inline/statementAsLastExprInBlock.kt

@@ -0,0 +1,18 @@
+package codegen.inline.statementAsLastExprInBlock
+
+import kotlin.test.*
+
+fun foo() {
+    val cls1: Any? = Int
+    val cls2: Any? = null
+
+    cls1?.let {
+        if (cls2 != null) {
+            val zzz = 42
+        }
+    }
+}
+
+@Test fun runTest() {
+    println("OK")
+}