pull up: ensure substituted (IDEA-140710)

java/java-tests/testData/refactoring/pullUp/SubstituteOverrideToMerge.java

@@ -0,0 +1,10 @@
+abstract class C<T> {
+    abstract void foo(T t);
+}
+
+class B<T> extends C<T> {
+    @Override
+    void f<caret>oo(T t) {
+
+    }
+}