SDL: Fixed warning: no previous prototype for function 'SDL_PrivateGetGamepadButtonFromString' [-Wmissing-prototypes]

From 87b8f096579fc12727f6e6ba63ded0a4b7bf8d4a Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Mon, 1 Jan 2024 14:56:55 -0800
Subject: [PATCH] Fixed warning: no previous prototype for function
 'SDL_PrivateGetGamepadButtonFromString' [-Wmissing-prototypes]

---
 src/joystick/SDL_gamepad.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/joystick/SDL_gamepad.c b/src/joystick/SDL_gamepad.c
index acadfaa99d60..77852ee1970c 100644
--- a/src/joystick/SDL_gamepad.c
+++ b/src/joystick/SDL_gamepad.c
@@ -1094,7 +1094,7 @@ SDL_COMPILE_TIME_ASSERT(map_StringForGamepadButton, SDL_arraysize(map_StringForG
 /*
  * convert a string to its enum equivalent
  */
-SDL_GamepadButton SDL_PrivateGetGamepadButtonFromString(const char *str, SDL_bool baxy)
+static SDL_GamepadButton SDL_PrivateGetGamepadButtonFromString(const char *str, SDL_bool baxy)
 {
     int i;
 
@@ -2818,7 +2818,7 @@ Uint8 SDL_GetGamepadButton(SDL_Gamepad *gamepad, SDL_GamepadButton button)
 /**
  * Get the label of a button on a gamepad.
  */
-SDL_GamepadButtonLabel SDL_GetGamepadButtonLabelForFaceStyle(SDL_GamepadFaceStyle face_style, SDL_GamepadButton button)
+static SDL_GamepadButtonLabel SDL_GetGamepadButtonLabelForFaceStyle(SDL_GamepadFaceStyle face_style, SDL_GamepadButton button)
 {
     SDL_GamepadButtonLabel label = SDL_GAMEPAD_BUTTON_LABEL_UNKNOWN;