Fix compiler warnings and some inspections

plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/ir/GeneratorHelpers.kt

@@ -94,7 +94,7 @@ interface IrBuilderExtension {
         irInvoke(
             dispatchReceiver,
             callee,
-            args = valueArguments.toTypedArray(),
+            *valueArguments.toTypedArray(),
             typeHint = returnTypeHint
         ).also { call -> typeArguments.forEachIndexed(call::putTypeArgument) }
 

plugins/kotlin-serialization/kotlin-serialization-compiler/src/org/jetbrains/kotlinx/serialization/compiler/backend/jvm/SerializerCodegenImpl.kt

@@ -372,7 +372,6 @@ open class SerializerCodegenImpl(
             for ((index, property) in serializableProperties.withIndex()) {
                 val propertyType = codegen.typeMapper.mapType(property.type)
                 if (!property.transient) {
-                    val propertyAddressInBitMask = bitMaskOff(index)
                     // labelI:
                     visitLabel(labels[labelNum + 1])
                     callReadProperty(property, propertyType, index, inputVar, descVar, propVar)