FIR2IR: fix constructor referencing in return statement

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt

@@ -649,9 +649,13 @@ class Fir2IrVisitor(
         }
         return returnExpression.convertWithOffsets { startOffset, endOffset ->
             val result = returnExpression.result
+            val descriptor = irTarget.descriptor
             IrReturnImpl(
                 startOffset, endOffset, nothingType,
-                symbolTable.referenceSimpleFunction(irTarget.descriptor),
+                when (descriptor) {
+                    is ClassConstructorDescriptor -> symbolTable.referenceConstructor(descriptor)
+                    else -> symbolTable.referenceSimpleFunction(descriptor)
+                },
                 result.toIrExpression()
             )
         }

compiler/testData/ir/irText/expressions/implicitCastInReturnFromConstructor.fir.txt

@@ -12,7 +12,7 @@ FILE fqName:<root> fileName:/implicitCastInReturnFromConstructor.kt
           BRANCH
             if: TYPE_OP type=kotlin.Boolean origin=INSTANCEOF typeOperand=kotlin.Unit
               GET_VAR 'x: kotlin.Any? declared in <root>.C.<init>' type=kotlin.Any? origin=null
-            then: RETURN type=kotlin.Nothing from='public final fun <init> (x: kotlin.Any?): <root>.C declared in <root>.C'
+            then: RETURN type=kotlin.Nothing from='public constructor <init> (x: kotlin.Any?) declared in <root>.C'
               GET_VAR 'x: kotlin.Any? declared in <root>.C.<init>' type=kotlin.Unit origin=null
         DELEGATING_CONSTRUCTOR_CALL 'public constructor <init> () [primary] declared in <root>.C'
     FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override]