Fixed build error

'__inline__' is not at beginning of declaration [-Werror=old-style-declaration]

src/render/software/SDL_triangle.c

@@ -721,7 +721,7 @@ end:
 #define FORMAT_2101010              1
 #define FORMAT_HAS_ALPHA(format)    format == 0
 #define FORMAT_HAS_NO_ALPHA(format) format < 0
-static int SDL_INLINE detect_format(SDL_PixelFormat *pf)
+static int detect_format(SDL_PixelFormat *pf)
 {
     if (pf->format == SDL_PIXELFORMAT_ARGB2101010) {
         return FORMAT_2101010;

src/video/SDL_blit_slow.c

@@ -28,7 +28,7 @@
 #define FORMAT_2101010              1
 #define FORMAT_HAS_ALPHA(format)    format == 0
 #define FORMAT_HAS_NO_ALPHA(format) format < 0
-static int SDL_INLINE detect_format(SDL_PixelFormat *pf)
+static int detect_format(SDL_PixelFormat *pf)
 {
     if (pf->format == SDL_PIXELFORMAT_ARGB2101010) {
         return FORMAT_2101010;