KT-2422 Invalid warning "Condition is always true"

#KT-2422 fixed

compiler/testData/diagnostics/tests/smartCasts/noErrorCheckForPackageLevelVal.kt

@@ -0,0 +1,25 @@
+//FILE: bar.kt
+package bar
+
+val i: Int? = 2
+
+//FILE: foo.kt
+package foo
+
+val i: Int? = 1
+
+class A(val i: Int?) {
+    fun testUseFromClass() {
+        if (foo.i != null) {
+            useInt(<!TYPE_MISMATCH!>i<!>)
+        }
+    }
+}
+
+fun testUseFromOtherPackage() {
+    if (bar.i != null) {
+        useInt(<!TYPE_MISMATCH!>i<!>)
+    }
+}
+
+fun useInt(i: Int) = i