Fix consistency of extensions

Signed-off-by: George Papadopoulos <[email protected]>

Author: GeorgePap-719

spring-data-r2dbc/src/main/kotlin/org/springframework/data/r2dbc/core/ReactiveSelectOperationExtensions.kt

@@ -17,8 +17,10 @@ package org.springframework.data.r2dbc.core
 
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.asFlow
+import kotlinx.coroutines.reactive.awaitFirst
 import kotlinx.coroutines.reactive.awaitFirstOrNull
 import kotlinx.coroutines.reactive.awaitSingle
+import kotlinx.coroutines.reactor.awaitSingleOrNull
 
 /**
  * Extensions for [ReactiveSelectOperation].
@@ -49,13 +51,13 @@ suspend inline fun <reified T : Any> ReactiveSelectOperation.TerminatingSelect<T
  * Nullable Coroutines variant of [ReactiveSelectOperation.TerminatingSelect.one].
  */
 suspend inline fun <reified T : Any> ReactiveSelectOperation.TerminatingSelect<T>.awaitOneOrNull(): T? =
-		one().awaitFirstOrNull()
+		one().awaitSingleOrNull()
 
 /**
  * Non-nullable Coroutines variant of [ReactiveSelectOperation.TerminatingSelect.first].
  */
 suspend inline fun <reified T : Any> ReactiveSelectOperation.TerminatingSelect<T>.awaitFirst(): T =
-		first().awaitSingle()
+		first().awaitFirst()
 
 /**
  * Nullable Coroutines variant of [ReactiveSelectOperation.TerminatingSelect.first].