DFA: add missing box/unbox conversions

java/java-tests/testData/inspection/dataFlow/fixture/BoxUnboxArrayElement.java

@@ -0,0 +1,14 @@
+class Test {
+  private final static Integer[] DATA = {119, 7, 3};
+  private final static int[] DATA2 = {119, 7, 3};
+
+  void test() {
+    for(int i=0; i<DATA.length; i++) {
+      Integer val = DATA[i];
+      int val2 = DATA2[i];
+      if (val != val2) {
+        System.out.println("Trouble");
+      }
+    }
+  }
+}

java/java-tests/testData/inspection/dataFlow/fixture/MapUpdateInlining.java

@@ -59,4 +59,8 @@ class MapUpdateInlining {
       System.out.println("impossible");
     }
   }
+
+  void testBoxing(Map<String, Integer> map, String key) {
+    map.merge(key, 1, (i1, i2) -> i1+1);
+  }
 }

java/java-tests/testSrc/com/intellij/java/codeInspection/DataFlowInspectionTest.java

@@ -620,4 +620,5 @@ public class DataFlowInspectionTest extends DataFlowInspectionTestCase {
   public void testNanComparisonWrong() { doTest(); }
   public void testConstantMethods() { doTest(); }
   public void testPolyadicEquality() { doTest(); }
+  public void testBoxUnboxArrayElement() { doTest(); }
 }