Addressed review comments + additional test

src/org/jetbrains/java/decompiler/main/extern/IFernflowerPreferences.java

@@ -17,7 +17,7 @@ public interface IFernflowerPreferences {
   String HIDE_DEFAULT_CONSTRUCTOR = "hdc";
   String DECOMPILE_GENERIC_SIGNATURES = "dgs";
   String NO_EXCEPTIONS_RETURN = "ner";
-  String KT_SYNCHRONIZED_MONITOR = "ksm";
+  String ENSURE_SYNCHRONIZED_MONITOR = "esm";
   String DECOMPILE_ENUM = "den";
   String REMOVE_GET_CLASS_NEW = "rgn";
   String LITERALS_AS_IS = "lit";
@@ -62,7 +62,7 @@ public interface IFernflowerPreferences {
     defaults.put(HIDE_DEFAULT_CONSTRUCTOR, "1");
     defaults.put(DECOMPILE_GENERIC_SIGNATURES, "0");
     defaults.put(NO_EXCEPTIONS_RETURN, "1");
-    defaults.put(KT_SYNCHRONIZED_MONITOR, "1");
+    defaults.put(ENSURE_SYNCHRONIZED_MONITOR, "1");
     defaults.put(DECOMPILE_ENUM, "1");
     defaults.put(REMOVE_GET_CLASS_NEW, "1");
     defaults.put(LITERALS_AS_IS, "0");

src/org/jetbrains/java/decompiler/main/rels/MethodProcessorRunnable.java

@@ -88,8 +88,8 @@ public class MethodProcessorRunnable implements Runnable {
       ExceptionDeobfuscator.removeEmptyRanges(graph);
     }
 
-    if (DecompilerContext.getOption(IFernflowerPreferences.KT_SYNCHRONIZED_MONITOR)) {
-      // special case: search for 'synchronized' ranges w/o monitorexit instruction (generated by the Kotlin compiler)
+    if (DecompilerContext.getOption(IFernflowerPreferences.ENSURE_SYNCHRONIZED_MONITOR)) {
+      // special case: search for 'synchronized' ranges w/o monitorexit instruction (as generated by Kotlin and Scala)
       DeadCodeHelper.extendSynchronizedRangeToMonitorexit(graph);
     }
 

testData/src/pkg/TestPrivateEmptyConstructor.java

@@ -1,3 +1,4 @@
+package pkg;
 
 public final class PrivateEmptyConstructor {
 

testData/src/pkg/TestSynchronizedUnprotected.kt

@@ -0,0 +1,8 @@
+
+object TestSynchronizedUnprotected {
+    fun test() {
+        synchronized(this) {
+            println("Boom")
+        }
+    }
+}