Fix for KT-7999: Wrong result when use nullable types as reified parameter, KT-8043: Unsafe cast to reified parameter throws NPE instead of TypeCastException

#KT-7999 Fixed
  #KT-8043 Fixed

~

compiler/testData/codegen/boxInline/reified/checkCast/nullable.1.kt

@@ -0,0 +1,45 @@
+import test.*
+
+fun box(): String {
+    if (null.foo<Any>() != null) return "failTypeCast 1"
+    if (null.foo<Any?>() != null) return "failTypeCast 2"
+
+    if  (null.foo<A>() != null) return "failTypeCast 3"
+    if  (null.foo<A?>() != null) return "failTypeCast 4"
+
+    val a = A()
+
+    if (a.foo<Any>() != a) return "failTypeCast 5"
+    if (a.foo<Any?>() != a) return "failTypeCast 6"
+
+    if (a.foo<A>() != a) return "failTypeCast 7"
+    if (a.foo<A?>() != a) return "failTypeCast 8"
+
+    val b = B()
+
+    failClassCast { b.foo<A>(); return "failTypeCast 9" }
+    failClassCast { b.foo<A?>(); return "failTypeCast 10" }
+
+    return "OK"
+}
+
+inline fun failTypeCast(s: () -> Unit) {
+    try {
+        s()
+    }
+    catch (e: TypeCastException) {
+
+    }
+}
+
+inline fun failClassCast(s: () -> Unit) {
+    try {
+        s()
+    }
+    catch (e: TypeCastException) {
+        throw e
+    }
+    catch (e: ClassCastException) {
+
+    }
+}