almost forgot - RelAddr is a boolean so use it here
diff --git a/src/mesa/shader/prog_print.c b/src/mesa/shader/prog_print.c
index 09bf15f..2c5e03a 100644
--- a/src/mesa/shader/prog_print.c
+++ b/src/mesa/shader/prog_print.c
@@ -206,7 +206,7 @@
  */
 static const char *
 reg_string(enum register_file f, GLint index, gl_prog_print_mode mode,
-           GLint relAddr, const struct gl_program *prog)
+           GLboolean relAddr, const struct gl_program *prog)
 {
    static char str[100];