haptic: Fix SDL_MouseIsHaptic() always returning SDL_TRUE on Android

src/haptic/android/SDL_syshaptic.c

@@ -155,7 +155,7 @@ SDL_SYS_HapticOpen(SDL_Haptic *haptic)
 int
 SDL_SYS_HapticMouse(void)
 {
-    return 0;
+    return -1;
 }