KT-1256 Error highlighting in IDE should be less annoying

#KT-1256 fixed

compiler/testData/diagnostics/tests/incompleteCode/incompleteAssignment.jet

@@ -6,7 +6,7 @@ fun sum(a : IntArray) : Int {
     <!UNRESOLVED_REFERENCE!>res<!> = 0
     for (e in a)
         res +=<!SYNTAX!><!>
-<!NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY!>}<!>
+}
 fun main(args : Array<String>) {
     test(0)
     test(1, 1)
@@ -27,4 +27,4 @@ fun assertEquals<T>(actual : T?, expected : T?, message : Any? = null) {
         else
             throw AssertionError(message)
     }
-}
+}