Fixed compiler warning
diff --git a/src/joystick/SDL_gamecontroller.c b/src/joystick/SDL_gamecontroller.c
index 82c8511..9ac3af5 100644
--- a/src/joystick/SDL_gamecontroller.c
+++ b/src/joystick/SDL_gamecontroller.c
@@ -998,7 +998,7 @@ static ControllerMapping_t *SDL_CreateMappingForAndroidController(const char *na
/* Remove trailing comma */
{
- int pos = strlen(mapping_string) - 1;
+ int pos = (int)SDL_strlen(mapping_string) - 1;
if (pos >= 0) {
if (mapping_string[pos] == ',') {
mapping_string[pos] = '\0';