Adds nullable to setAndGet

Author: jeffreydelooff

library/src/androidTest/java/nl/elements/objectstore/PreferencesStoreTest.kt

@@ -102,7 +102,7 @@ class PreferencesStoreTest {
     }
 }
 
-private fun <T : Any> ObjectStore.setAndGet(key: String, value: T): T {
+private fun <T : Any> ObjectStore.setAndGet(key: String, value: T): T? {
     set(key, value)
     return this[key]
 }

library/src/test/java/nl/elements/objectstore/InMemoryStoreTest.kt

@@ -95,7 +95,7 @@ class InMemoryStoreTest {
     }
 }
 
-private fun <T : Any> ObjectStore.setAndGet(key: String, value: T): T {
+private fun <T : Any> ObjectStore.setAndGet(key: String, value: T): T? {
     set(key, value)
     return this[key]
 }