Introduce "Redundant else in if" inspection #KT-19668 Fixed

idea/testData/inspectionsLocal/redundantElseInIf/redundant4.kt.after

@@ -0,0 +1,16 @@
+// WITH_RUNTIME
+class SomeException : RuntimeException()
+fun foo(): Int = 1
+fun bar(): Int = 2
+
+fun test(x: Boolean, y: Boolean) {
+    if (x) {
+        return
+    } else if (y) {
+        throw SomeException()
+    }
+    // comment1
+    foo()
+    // comment2
+    bar()
+}