Fix 6.1 compile error, fix tests

Signed-off-by: Adam Fowler <adamfowler71@gmail.com>

Author: adam-fowler

Sources/Valkey/Connection/ValkeyConnection.swift

@@ -466,7 +466,7 @@ public final actor ValkeyConnection: ValkeyClientProtocol, Sendable {
         buffer: ByteBuffer,
         promises: [EventLoopPromise<RESPToken>],
         valkeyPromises: [ValkeyPromise<RESPToken>],
-        processResults: sending ([EventLoopPromise<RESPToken>]) async -> Value
+        processResults: sending ([EventLoopPromise<RESPToken>]) async -> sending Value
     ) async -> Value {
         let requestID = Self.requestIDGenerator.next()
         return await withTaskCancellationHandler {

Tests/ValkeyTests/ValkeyConnectionTests.swift

@@ -290,12 +290,13 @@ struct ConnectionTests {
         try await channel.writeInbound(RESPToken(.simpleString("QUEUED")).base)
         try await channel.writeInbound(RESPToken(.simpleError("ERROR")).base)
         try await channel.writeInbound(RESPToken(.simpleError("EXECABORT")).base)
-        do {
-            _ = try await asyncResults
-            Issue.record("Transaction should throw error")
-        } catch let error as ValkeyClientError {
-            #expect(error == ValkeyClientError(.commandError, message: "EXECABORT"))
-        }
+        let results = try await asyncResults
+        var error = #expect(throws: ValkeyClientError.self) { try results.0.get() }
+        #expect(error?.errorCode == .commandError)
+        #expect(error?.message == "EXECABORT")
+        error = #expect(throws: ValkeyClientError.self) { try results.1.get() }
+        #expect(error?.errorCode == .commandError)
+        #expect(error?.message == "ERROR")
     }
 
     @Test
@@ -373,12 +374,13 @@ struct ConnectionTests {
         try await channel.writeInbound(RESPToken(.simpleString("QUEUED")).base)
         try await channel.writeInbound(RESPToken(.simpleError("ERROR")).base)
         try await channel.writeInbound(RESPToken(.simpleError("EXECABORT")).base)
-        do {
-            _ = try await asyncResults
-            Issue.record("Transaction should throw error")
-        } catch let error as ValkeyClientError {
-            #expect(error == ValkeyClientError(.commandError, message: "EXECABORT"))
-        }
+        let results = try await asyncResults
+        var error = #expect(throws: ValkeyClientError.self) { try results[0].get() }
+        #expect(error?.errorCode == .commandError)
+        #expect(error?.message == "EXECABORT")
+        error = #expect(throws: ValkeyClientError.self) { try results[1].get() }
+        #expect(error?.errorCode == .commandError)
+        #expect(error?.message == "ERROR")
     }
 
     @Test