[PATCH 1/1] configure.ac: Fix SDL2 typo by referencing value

[Michał Grzelak]

During configuration of SDL2, variable enable_grub_emu_sdl2 is checked
whether to throw an error message. Howerever, error could not happen
because two unequal strings were compared. Fix this by referencing
value of enable_grub_emu_sdl2, not name.

Fixes: 17d6ac1a7 (emu: Add SDL2 support)

Signed-off-by: Michał Grzelak <mchl.grzlk@gmail.com>
---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 01500ffdf..27c5918fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1609,7 +1609,7 @@ if test "$platform" = emu; then
             AC_SUBST(HAVE_SDL2)],
             [grub_emu_sdl2_excuse="libSDL2 libraries are required to build 
\`grub-emu' with SDL2 support"])
   [fi]
-  if test x"enable_grub_emu_sdl2" = xyes && test x"$grub_emu_sdl2_excuse" != x 
; then
+  if test x"$enable_grub_emu_sdl2" = xyes && test x"$grub_emu_sdl2_excuse" != 
x ; then
     AC_MSG_ERROR([SDL2 support for grub-emu was explicitly requested but can't 
be compiled ($grub_emu_sdl2_excuse)])
   fi
   if test x"$grub_emu_sdl2_excuse" = x ; then
-- 
2.37.3