Merge remote-tracking branch 'origin/master'

Conflicts:
	js/js.tests/test/org/jetbrains/k2js/test/SingleFileTranslationTest.java
	js/js.tests/test/org/jetbrains/k2js/test/semantics/StdLibTestToJSTest.java

compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/CallResolver.java

@@ -758,7 +758,7 @@ public class CallResolver {
                     result = OTHER_ERROR;
                 }
             }
-            if (safeAccess && (receiverParameter.getType().isNullable() || !receiverArgumentType.isNullable())) {
+            if (safeAccess && !receiverArgumentType.isNullable()) {
                 context.tracing.unnecessarySafeCall(context.candidateCall.getTrace(), receiverArgumentType);
             }
         }