Fix another NaCl warning

build-scripts/naclbuild.sh

@@ -20,7 +20,7 @@ fi
 echo "Using SDK at $NACL_SDK_ROOT"
 
 export NACL_SDK_ROOT="$NACL_SDK_ROOT"
-export CFLAGS="$CFLAGS -I$NACL_SDK_ROOT/include"
+export CFLAGS="$CFLAGS -I$NACL_SDK_ROOT/include -I$NACL_SDK_ROOT/include/pnacl"
 
 NCPUS="1"
 case "$OSTYPE" in

src/main/nacl/SDL_nacl_main.c

@@ -29,6 +29,7 @@
 #include "ppapi_simple/ps_event.h"
 #include "ppapi_simple/ps_interface.h"
 #include "nacl_io/nacl_io.h"
+#include "sys/mount.h"
 
 extern void NACL_SetScreenResolution(int width, int height, Uint32 format);