Allowed binds to execute commands.

src/input/inputbutton.c

@@ -10,7 +10,7 @@
 #include "assert/assert.h"
 #include "util/string.h"
 
-const inputbuttondata_t INPUT_BUTTON_DATA[] = {
+inputbuttondata_t INPUT_BUTTON_DATA[] = {
   #if INPUT_SDL2 == 1
     #if INPUT_GAMEPAD == 1
       #if PSP
@@ -138,6 +138,8 @@ const inputbuttondata_t INPUT_BUTTON_DATA[] = {
       { .name = "kp_equals",  { .type = INPUT_BUTTON_TYPE_KEYBOARD, .scancode = SDL_SCANCODE_KP_EQUALS  } },
     #endif
   #endif
+
+  { .name = NULL }
 };
 
 inputbutton_t inputButtonGetByName(const char_t *name) {