extract method nullable check: ensure correct exist statement chosen (IDEA-132706)

java/java-tests/testData/refactoring/extractMethod/NullableCheckBreak.java

@@ -0,0 +1,24 @@
+import java.util.List;
+
+class Test {
+  List<Pojo> things;
+
+  void foo() {
+    while(true) {
+      <selection>Pojo x = things.get(0);
+
+      if(x.it > 0) {
+        break;
+      }
+      things.remove(x);</selection> 
+      System.out.println(x.it);
+    }
+  }
+
+  static class Pojo {
+    double it;
+    Pojo(double w) {
+      it = w;
+    }
+  }
+}

java/java-tests/testData/refactoring/extractMethod/NullableCheckBreak_after.java

@@ -0,0 +1,30 @@
+import java.util.List;
+
+class Test {
+  List<Pojo> things;
+
+  void foo() {
+    while(true) {
+        Pojo x = newMethod();
+        if (x == null) break; 
+      System.out.println(x.it);
+    }
+  }
+
+    private Pojo newMethod() {
+        Pojo x = things.get(0);
+
+        if(x.it > 0) {
+            return null;
+        }
+        things.remove(x);
+        return x;
+    }
+
+    static class Pojo {
+    double it;
+    Pojo(double w) {
+      it = w;
+    }
+  }
+}