field can be local extended: suggest read only fields used in e.g. constructor once as can be local; process inner class constructors as methods (IDEA-52670)

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

@@ -24,4 +24,6 @@ public class FieldCanBeLocalTest extends InspectionTestCase {
   public void testConstructor () throws Exception { doTest(); }
   public void testStaticFinal() throws Exception { doTest(); }
   public void testStaticAccess() throws Exception { doTest(); }
+  public void testInnerClassConstructor() throws Exception { doTest(); }
+  public void testLocalVar2InnerClass() throws Exception { doTest(); }
 }