Merge pull request #180 from codecrafters-io/andy/fix

fix: correct mutex handling in SendCommandTestCase Run method

Author: andy1li

internal/test_cases/send_command_test_case.go

@@ -42,9 +42,9 @@ func (t *SendCommandTestCase) Run(client *resp_client.RespConnection, logger *lo
 		}
 
 		t.readMutex.Lock()
-		defer t.readMutex.Unlock()
-
 		value, err = client.ReadValue()
+		t.readMutex.Unlock()
+
 		if err != nil {
 			return err
 		}