lottie: fix interpolation issue

Interpolation between closed and open curves
is allowed. Since these curves have a different
number of points, this caused an error. The current
behavior enforces both curves to be treated as opened.

@issue: #2287

src/loaders/lottie/tvgLottieProperty.h

@@ -560,24 +560,26 @@ struct LottiePathSet : LottieProperty
 
         auto s = frame->value.pts;
         auto e = (frame + 1)->value.pts;
+        //possible interpolation between closed and opened curves
+        auto minFrame = frame->value.ptsCnt <= (frame + 1)->value.ptsCnt ? frame : frame + 1;
 
         if (roundness > ROUNDNESS_EPSILON) {
-            auto interpPts = (Point*)malloc(frame->value.ptsCnt * sizeof(Point));
+            auto interpPts = (Point*)malloc(minFrame->value.ptsCnt * sizeof(Point));
             auto p = interpPts;
-            for (auto i = 0; i < frame->value.ptsCnt; ++i, ++s, ++e, ++p) {
+            for (auto i = 0; i < minFrame->value.ptsCnt; ++i, ++s, ++e, ++p) {
                 *p = mathLerp(*s, *e, t);
                 if (transform) mathMultiply(p, transform);
             }
-            _modifier(interpPts, frame->value.ptsCnt, frame->value.cmds, frame->value.cmdsCnt, cmds, pts, nullptr, roundness);
+            _modifier(interpPts, minFrame->value.ptsCnt, minFrame->value.cmds, minFrame->value.cmdsCnt, cmds, pts, nullptr, roundness);
             free(interpPts);
             return true;
         } else {
-            for (auto i = 0; i < frame->value.ptsCnt; ++i, ++s, ++e) {
+            for (auto i = 0; i < minFrame->value.ptsCnt; ++i, ++s, ++e) {
                 auto pt = mathLerp(*s, *e, t);
                 if (transform) mathMultiply(&pt, transform);
                 pts.push(pt);
             }
-            _copy(&frame->value, cmds);
+            _copy(&minFrame->value, cmds);
         }
         return true;
     }