Generate linenumberts in objects clinit

compiler/backend/src/org/jetbrains/kotlin/codegen/ImplementationBodyCodegen.java

@@ -999,6 +999,7 @@ public class ImplementationBodyCodegen extends ClassBodyCodegen {
 
             // Invoke the object constructor but ignore the result because INSTANCE$ will be initialized in the first line of <init>
             InstructionAdapter v = createOrGetClInitCodegen().v;
+            markLineNumberForSyntheticFunction(descriptor, v);
             v.anew(classAsmType);
             v.invokespecial(classAsmType.getInternalName(), "<init>", "()V", false);
             if (isCompanionObjectWithBackingFieldsInOuter(descriptor)) {

idea/testData/debugger/tinyApp/outs/fwBackingField.out

@@ -31,6 +31,7 @@ fwBackingField.kt:38
 fwBackingField.kt:62
 fwBackingField.kt:45
 fwBackingField.kt:48
+fwBackingField.kt:43
 fwBackingField.kt:62
 fwBackingField.kt:45
 fwBackingField.kt:51