SDL: include: Fixed a C++-style single line comment. (2aeac)

SDL Commits
1 
From 2aeac8de5137697266a7e80b9ed6c44b883348eb Mon Sep 17 00:00:00 2001
From: Wohlstand <[EMAIL REDACTED]>
Date: Thu, 30 Mar 2023 00:40:46 +0300
Subject: [PATCH] include: Fixed a C++-style single line comment.

https://github.com/libsdl-org/SDL/commit/78725dc0cd8502a91d2565af44ff9e6e65f0f30d
---
 include/SDL_mutex.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/SDL_mutex.h b/include/SDL_mutex.h
index 8fc237a17304..343824b7bc1c 100644
--- a/include/SDL_mutex.h
+++ b/include/SDL_mutex.h
@@ -39,7 +39,7 @@
     defined(__clang__) && (!defined(SWIG))
 #define SDL_THREAD_ANNOTATION_ATTRIBUTE__(x)   __attribute__((x))
 #else
-#define SDL_THREAD_ANNOTATION_ATTRIBUTE__(x)   // no-op
+#define SDL_THREAD_ANNOTATION_ATTRIBUTE__(x)   /* no-op */
 #endif
 
 #define SDL_CAPABILITY(x) \