Fix SDL tslib touch handling
@@ -1406,7 +1406,7 @@ bool gslc_TDrvGetTouch(gslc_tsGui* pGui,int16_t* pnX,int16_t* pnY,uint16_t* pnPr
// Since we are only requesting at most 1 sample, the return
// value should either be 0 (no samples) or 1 (sample success)
- if (nRet >= 0) {
+ if (nRet > 0) {
// Sample successfully fetched
(*pnX) = pSamp.x;
(*pnY) = pSamp.y;
