progs/rbug: Add missing headers.

progs/rbug/bin_to_bmp.c

@@ -32,6 +32,7 @@
 #include "util/u_debug.h"
 #include "util/u_format.h"
 #include "util/u_network.h"
+#include "util/u_string.h"
 #include "util/u_tile.h"
 
 static uint8_t* rbug_read(const char *filename, unsigned size);

progs/rbug/ctx_rule.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 "util/u_memory.h"

progs/rbug/shdr_disable.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 "util/u_memory.h"

progs/rbug/tex_dump.c

@@ -29,6 +29,7 @@
 #include "util/u_debug.h"
 #include "util/u_format.h"
 #include "util/u_network.h"
+#include "util/u_string.h"
 #include "util/u_tile.h"
 #include "rbug/rbug.h"