SDL: Add 'return' comment to SDL_ClearClipboardData

From ec90c2e26d64701c6565e7e1e3b2b15da1361e74 Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Fri, 7 Jul 2023 10:24:14 +0200
Subject: [PATCH] Add 'return' comment to SDL_ClearClipboardData

---
 include/SDL3/SDL_clipboard.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/SDL3/SDL_clipboard.h b/include/SDL3/SDL_clipboard.h
index 454b47491d63..e5979646ea26 100644
--- a/include/SDL3/SDL_clipboard.h
+++ b/include/SDL3/SDL_clipboard.h
@@ -197,6 +197,9 @@ extern DECLSPEC int SDLCALL SDL_SetClipboardData(SDL_ClipboardDataCallback callb
 /**
  * Clear the clipboard data
  *
+ * \returns 0 on success or a negative error code on failure; call
+ *          SDL_GetError() for more information.
+ *
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_SetClipboardData