NPE from EA fixed

compiler/frontend/src/org/jetbrains/jet/lang/types/expressions/BasicExpressionTypingVisitor.java

@@ -956,7 +956,8 @@ public class BasicExpressionTypingVisitor extends ExpressionTypingVisitor {
         }
     }
 
-    private boolean isSenselessComparisonWithNull(JetType firstType, JetExpression secondExpression) {
+    private boolean isSenselessComparisonWithNull(@Nullable JetType firstType, @NotNull JetExpression secondExpression) {
+        if (firstType == null) return false;
         return !firstType.isNullable() && secondExpression instanceof JetConstantExpression && secondExpression.getNode().getElementType() == JetNodeTypes.NULL;
     }
 

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

@@ -0,0 +1,5 @@
+package d
+
+fun foo(<!UNUSED_PARAMETER!>a<!> : IntArray) {
+    if (null == <!UNRESOLVED_REFERENCE!>a<!>()<!SYNTAX!><!>
+<!SYNTAX!><!>}