KT-2514 Type inference fails when using extension function literal

(check for bounds when inference is not complete added)
 #KT-2514 fixed

compiler/testData/diagnostics/tests/inference/regressions/kt2514.kt

@@ -0,0 +1,16 @@
+//KT-2514 Type inference fails when using extension function literal
+package kt2514
+
+//+JDK
+import java.io.Closeable
+
+fun <T> Thread.use(block: Thread.() -> T): T = block()
+
+fun <T: Closeable, R> T.use(block: (T)-> R) : R = block(this)
+
+fun main(args: Array<String>) {
+    Thread().use { }            // compilation error: Type inference failed
+    Thread().use { 5 + 5 }      // compilation error: Type inference failed
+    Thread().use<Unit> { }      // compiles okay
+    Thread().use<Int> { 5 + 5 } // compiles okay
+}