progs/rbug: Add missing header.
diff --git a/progs/rbug/bin_to_bmp.c b/progs/rbug/bin_to_bmp.c
index 346bdea..18dd57b0 100644
--- a/progs/rbug/bin_to_bmp.c
+++ b/progs/rbug/bin_to_bmp.c
@@ -22,6 +22,8 @@
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <stdio.h>
+
 #include "pipe/p_compiler.h"
 #include "pipe/p_format.h"
 #include "pipe/p_state.h"