More accurate CFG for local class constructors (now they are not considered unconditionally executed) #KT-10042 Fixed

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCodeInLocalDeclarations.kt

@@ -23,7 +23,7 @@ fun testObjectExpression1() {
 fun testClassDeclaration() {
     class C : <!UNREACHABLE_CODE!>Foo(<!>todo()<!UNREACHABLE_CODE!>)<!> {}
 
-    <!UNREACHABLE_CODE!>bar()<!>
+    bar()
 }
 
 fun testFunctionDefaultArgument() {

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalClass.kt

@@ -0,0 +1,21 @@
+fun foo() {
+    var x: String
+    class A {
+        init {
+            x = ""
+        }
+    }
+    // Error! See KT-10042
+    <!UNINITIALIZED_VARIABLE!>x<!>.length
+}
+
+fun bar() {
+    var x: String
+    object: Any() {
+        init {
+            x = ""
+        }
+    }
+    // Ok
+    x.length
+}

compiler/testData/diagnostics/tests/controlFlowAnalysis/initializationInLocalClass.txt

@@ -0,0 +1,4 @@
+package
+
+public fun bar(): kotlin.Unit
+public fun foo(): kotlin.Unit