sdl12-compat: SDL_endian.h: minor cleanup for watcom _inline keyword.

From a25582727501c115df554b889801107851282839 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 24 Nov 2021 17:02:02 +0300
Subject: [PATCH] SDL_endian.h: minor cleanup for watcom _inline keyword.

---
 include/SDL/SDL_endian.h | 14 ++++++++------
 src/SDL12_compat.c       |  2 +-
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/include/SDL/SDL_endian.h b/include/SDL/SDL_endian.h
index 2e50eb9..4718b98 100644
--- a/include/SDL/SDL_endian.h
+++ b/include/SDL/SDL_endian.h
@@ -34,8 +34,8 @@ real SDL-1.2 available to you. */
 
 /* This is all lifted out of SDL2's zlib-licensed headers. */
 
-#define SDL_LIL_ENDIAN	1234
-#define SDL_BIG_ENDIAN	4321
+#define SDL_LIL_ENDIAN  1234
+#define SDL_BIG_ENDIAN  4321
 
 #ifndef SDL_BYTEORDER           /* Not defined in SDL_config.h? */
 #ifdef __linux__
@@ -60,6 +60,7 @@ real SDL-1.2 available to you. */
 #endif /* __linux__ */
 #endif /* !SDL_BYTEORDER */
 
+
 #include "begin_code.h"
 
 /* various modern compilers may have builtin swap */
@@ -129,7 +130,7 @@ SDL_Swap16(Uint16 x)
     return x;
 }
 #elif defined(__WATCOMC__) && defined(__386__)
-extern _inline Uint16 SDL_Swap16(Uint16);
+extern __inline Uint16 SDL_Swap16(Uint16);
 #pragma aux SDL_Swap16 = \
   "xchg al, ah" \
   parm   [ax]   \
@@ -187,7 +188,7 @@ SDL_Swap32(Uint32 x)
     return x;
 }
 #elif defined(__WATCOMC__) && defined(__386__)
-extern _inline Uint32 SDL_Swap32(Uint32);
+extern __inline Uint32 SDL_Swap32(Uint32);
 #pragma aux SDL_Swap32 = \
   "bswap eax"  \
   parm   [eax] \
@@ -230,7 +231,7 @@ SDL_Swap64(Uint64 x)
     return x;
 }
 #elif defined(__WATCOMC__) && defined(__386__)
-extern _inline Uint64 SDL_Swap64(Uint64);
+extern __inline Uint64 SDL_Swap64(Uint64);
 #pragma aux SDL_Swap64 = \
   "bswap eax"     \
   "bswap edx"     \
@@ -254,6 +255,7 @@ SDL_Swap64(Uint64 x)
 }
 #endif
 
+
 /* remove extra macros */
 #undef HAS_BROKEN_BSWAP
 #undef HAS_BUILTIN_BSWAP16
@@ -285,4 +287,4 @@ SDL_Swap64(Uint64 x)
 
 #include "close_code.h"
 
-#endif
+#endif /* _SDL_endian_h */
diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index 351b9a3..6dc9b7e 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -110,7 +110,7 @@ extern "C" {
 
 /* From SDL2.0's SDL_bits.h: a force-inlined function. */
 #if defined(__WATCOMC__) && defined(__386__)
-extern _inline int _SDL20_bsr_watcom (Uint32);
+extern __inline int _SDL20_bsr_watcom(Uint32);
 #pragma aux _SDL20_bsr_watcom = \
     "bsr eax, eax" \
     parm [eax] nomemory \