Fix compilation of sprite.cpp

src/openrct2/drawing/drawing.h

@@ -270,7 +270,6 @@ extern sint32 gPickupPeepX;
 extern sint32 gPickupPeepY;
 
 extern rct_g1_element *g1Elements;
-extern rct_gx g2;
 
 extern rct_drawpixelinfo gScreenDPI;
 extern rct_drawpixelinfo gWindowDPI;

src/openrct2/platform/linux.c

@@ -495,7 +495,7 @@ utf8 *platform_open_directory_browser(utf8 *title) {
 	return return_value;
 }
 
-void platform_show_messagebox(char *message) {
+void platform_show_messagebox(const char * message) {
 	size_t size;
 	dialog_type dtype;
 	char cmd[MAX_PATH];

src/openrct2/platform/macos.m

@@ -94,7 +94,7 @@ void platform_posix_sub_resolve_openrct_data_path(utf8 *out, size_t size) {
 	}
 }
 
-void platform_show_messagebox(char *message)
+void platform_show_messagebox(const char * message)
 {
 	@autoreleasepool
 	{

src/openrct2/platform/platform.h

@@ -193,7 +193,7 @@ void platform_resolve_openrct_data_path();
 void platform_get_openrct_data_path(utf8 *outPath, size_t outSize);
 void platform_get_user_directory(utf8 *outPath, const utf8 *subDirectory, size_t outSize);
 utf8* platform_get_username();
-void platform_show_messagebox(utf8 *message);
+void platform_show_messagebox(const utf8 * message);
 bool platform_open_common_file_dialog(utf8 *outFilename, file_dialog_desc *desc, size_t outSize);
 utf8 *platform_open_directory_browser(utf8 *title);
 uint8 platform_get_locale_currency();

src/openrct2/platform/windows.c

@@ -590,7 +590,7 @@ void platform_get_user_directory(utf8 *outPath, const utf8 *subDirectory, size_t
 	}
 }
 
-void platform_show_messagebox(utf8 *message)
+void platform_show_messagebox(const utf8 * message)
 {
 	MessageBoxA(windows_get_window_handle(), message, "OpenRCT2", MB_OK);
 }