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Fixed bug 1781 - SDL sets an error for the initial touch on Android.
Philipp Wiesemann SDL sets an error to be queried with SDL_GetError() for the initial touch on Android. Android_OnTouch() in SDL_androidtouch.c uses SDL_GetTouch() to check if a touch device was already added. SDL_GetTouch() sets the error "Unknown touch device" for an out of range access because touch devices are added after initial touch. I think this error is confusing because it always happens by design. I attached a patch which removes the call to SDL_GetTouch() and only uses SDL_AddTouch() which does the check (if already added) again and does not set an error (if not added yet).
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