Added tests

#KT-6179 Fixed
  #KT-8132 Fixed

compiler/testData/diagnostics/tests/inference/regressions/kt8132.kt

@@ -0,0 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// KT-8132 Can't omit lambda parameter types
+
+fun <T> test(foo: List<T>): T {
+    return if (true)
+        throw IllegalStateException()
+    else
+        foo.reduce { left, right -> left } // error: inferred type T is not subtype Nothing
+}
+
+fun <S, T: S> Iterable<T>.reduce(operation: (S, T) -> S): S = throw Exception()

compiler/testData/diagnostics/tests/inference/regressions/kt8132.txt

@@ -0,0 +1,4 @@
+package
+
+internal fun </*0*/ T> test(/*0*/ foo: kotlin.List<T>): T
+internal fun </*0*/ S, /*1*/ T : S> kotlin.Iterable<T>.reduce(/*0*/ operation: (S, T) -> S): S