make sure that patch applies

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

SDL2-2.0.6-CVE-2017-2888-2.patch

@@ -16,9 +16,9 @@ I've verified that this is also the case on Debian unstable (gcc 7.2).
 diff -r 97bc026b46de -r 81a4950907a0 src/video/SDL_surface.c
 --- a/src/video/SDL_surface.c	Mon Oct 16 14:39:56 2017 -0700
 +++ b/src/video/SDL_surface.c	Mon Oct 16 14:57:42 2017 -0700
-@@ -37,6 +37,10 @@
-         const void *src, int src_pitch,
-         Uint32 dst_format, void *dst);
+@@ -26,6 +26,10 @@
+ #include "SDL_RLEaccel_c.h"
+ #include "SDL_pixels_c.h"
  
 +/* Check to make sure we can safely check multiplication of surface w and pitch and it won't overflow size_t */
 +SDL_COMPILE_TIME_ASSERT(surface_size_assumptions,