Fixed one part of 'Resolution error of this type shouldn't occur for...'

Result for "IF<T>(T, T)" can be "hasUnknownParameters"
if both arguments have types 'uninferred type parameter' (incomplete resolve case),
no constraints are added to the system.

compiler/tests/org/jetbrains/jet/checkers/JetDiagnosticsTestGenerated.java

@@ -3781,6 +3781,11 @@ public class JetDiagnosticsTestGenerated extends AbstractJetDiagnosticsTest {
                 doTest("compiler/testData/diagnostics/tests/incompleteCode/checkNothingIsSubtype.kt");
             }
             
+            @TestMetadata("controlStructuresErrors.kt")
+            public void testControlStructuresErrors() throws Exception {
+                doTest("compiler/testData/diagnostics/tests/incompleteCode/controlStructuresErrors.kt");
+            }
+            
             @TestMetadata("inExpr.kt")
             public void testInExpr() throws Exception {
                 doTest("compiler/testData/diagnostics/tests/incompleteCode/inExpr.kt");