Java to Kotlin converter: better formatting preserving from original code

#KT-4801 Fixed

j2k/tests/testData/ast/nullability/MethodInvokedWithTernaryNullArg.kt

@@ -3,9 +3,6 @@ class C() {
     }
 
     fun bar(b: Boolean) {
-        foo(if (b)
-            "a"
-        else
-            null)
+        foo(if (b) "a" else null)
     }
 }

j2k/tests/testData/ast/nullability/MethodResultComparedWithNull4.kt

@@ -5,8 +5,7 @@ trait I {
 class C() {
     fun foo(i: I, b: Boolean) {
         val result = i.getString()
-        if (b)
-            result = null
+        if (b) result = null
         if (result != null) {
             print(result)
         }

j2k/tests/testData/ast/nullability/MethodReturnsTernaryNull.kt

@@ -1,8 +1,5 @@
 class C() {
     fun foo(b: Boolean): String? {
-        return if (b)
-            "abc"
-        else
-            null
+        return if (b) "abc" else null
     }
 }

j2k/tests/testData/ast/nullability/NullableMethodDotAccess.kt

@@ -1,9 +1,6 @@
 class C() {
     fun getString(b: Boolean): String? {
-        return if (b)
-            "a"
-        else
-            null
+        return if (b) "a" else null
     }
 
     fun foo(): Int {

j2k/tests/testData/ast/nullability/NullableVariableDotAccess.kt

@@ -1,7 +1,5 @@
 fun foo(s: String?, b: Boolean): Int {
-    if (s == null)
-        System.out.println("null")
-    if (b)
-        return s?.length()!!
+    if (s == null) System.out.println("null")
+    if (b) return s?.length()!!
     return 10
 }

j2k/tests/testData/ast/nullability/VariableInitializedWithTernaryNull.kt

@@ -1,7 +1,4 @@
 // !specifyLocalVariableTypeByDefault: true
 fun foo(b: Boolean) {
-    val s: String? = (if (b)
-        "abc"
-    else
-        null)
+    val s: String? = (if (b) "abc" else null)
 }