[PATCH v2 1/2] grub-emu: SDL style fixes

[Julian Andres Klode]

These should be quite obvious and will make the SDL2 patch easier
to read then doing it inline there.
---
 configure.ac              |  2 +-
 grub-core/video/emu/sdl.c | 16 ++++++++--------
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/configure.ac b/configure.ac
index d9f088d12..abd8375fd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1590,7 +1590,7 @@ AC_CHECK_LIB([SDL], [SDL_Init], [LIBSDL="-lSDL"],
   [fi]
 
   if test x"enable_grub_emu_sdl" = xyes && test x"$grub_emu_sdl_excuse" != x ; 
then
-  AC_MSG_ERROR([SDL support for grub-emu was explicitly requested but can't be 
compiled ($grub_emu_sdl_excuse)])
+    AC_MSG_ERROR([SDL support for grub-emu was explicitly requested but can't 
be compiled ($grub_emu_sdl_excuse)])
   fi
   if test x"$grub_emu_sdl_excuse" = x ; then
     enable_grub_emu_sdl=yes
diff --git a/grub-core/video/emu/sdl.c b/grub-core/video/emu/sdl.c
index 0ebab6f57..c1b66f01e 100644
--- a/grub-core/video/emu/sdl.c
+++ b/grub-core/video/emu/sdl.c
@@ -29,7 +29,7 @@
 
 GRUB_MOD_LICENSE ("GPLv3+");
 
-static SDL_Surface *window = 0;
+static SDL_Surface *window = NULL;
 static struct grub_video_render_target *sdl_render_target;
 static struct grub_video_mode_info mode_info;
 
@@ -40,10 +40,10 @@ grub_video_sdl_set_palette (unsigned int start, unsigned 
int count,
 static grub_err_t
 grub_video_sdl_init (void)
 {
-  window = 0;
+  window = NULL;
 
   if (SDL_Init (SDL_INIT_VIDEO) < 0)
-    return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't init SDL: %s",
+    return grub_error (GRUB_ERR_BAD_DEVICE, "could not init SDL: %s",
                       SDL_GetError ());
 
   grub_memset (&mode_info, 0, sizeof (mode_info));
@@ -55,7 +55,7 @@ static grub_err_t
 grub_video_sdl_fini (void)
 {
   SDL_Quit ();
-  window = 0;
+  window = NULL;
 
   grub_memset (&mode_info, 0, sizeof (mode_info));
 
@@ -96,10 +96,10 @@ grub_video_sdl_setup (unsigned int width, unsigned int 
height,
     flags |= SDL_DOUBLEBUF;
 
   window = SDL_SetVideoMode (width, height, depth, flags | SDL_HWSURFACE);
-  if (! window)
+  if (window == NULL)
     window = SDL_SetVideoMode (width, height, depth, flags | SDL_SWSURFACE);
-  if (! window)
-    return grub_error (GRUB_ERR_BAD_DEVICE, "Couldn't open window: %s",
+  if (window == NULL)
+    return grub_error (GRUB_ERR_BAD_DEVICE, "could not open window: %s",
                       SDL_GetError ());
 
   grub_memset (&sdl_render_target, 0, sizeof (sdl_render_target));
@@ -191,7 +191,7 @@ static grub_err_t
 grub_video_sdl_swap_buffers (void)
 {
   if (SDL_Flip (window) < 0)
-    return grub_error (GRUB_ERR_BAD_DEVICE, "couldn't swap buffers: %s",
+    return grub_error (GRUB_ERR_BAD_DEVICE, "could not swap buffers: %s",
                       SDL_GetError ());
   return GRUB_ERR_NONE;
 }
-- 
2.40.1