replace hardcoded number of mouse buttons with MAX_MOUSE_BUTTONS (#2076)

src/rcore.c

@@ -4718,7 +4718,7 @@ void PollInputEvents(void)
     // Register previous mouse states
     CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove;
     CORE.Input.Mouse.currentWheelMove = 0.0f;
-    for (int i = 0; i < 3; i++)
+    for (int i = 0; i < MAX_MOUSE_BUTTONS; i++)
     {
         CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
         CORE.Input.Mouse.currentButtonState[i] = CORE.Input.Mouse.currentButtonStateEvdev[i];
@@ -4742,7 +4742,7 @@ void PollInputEvents(void)
     for (int i = 0; i < MAX_KEYBOARD_KEYS; i++) CORE.Input.Keyboard.previousKeyState[i] = CORE.Input.Keyboard.currentKeyState[i];
 
     // Register previous mouse states
-    for (int i = 0; i < 3; i++) CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
+    for (int i = 0; i < MAX_MOUSE_BUTTONS; i++) CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
 
     // Register previous mouse wheel state
     CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove;