common paint: fix memory leak case.

free the previous composition target if any,
before reset with the new one.

diff --git a/src/lib/tvgPaint.h b/src/lib/tvgPaint.h
index e3846e9..464de43 100644 (file)
--- a/src/lib/tvgPaint.h
+++ b/src/lib/tvgPaint.h
@@ -224,6 +224,7 @@ namespace tvg
         bool composite(Paint* target, CompositeMethod method)
         {
             if ((!target && method != CompositeMethod::None) || (target && method == CompositeMethod::None)) return false;
+            if (cmpTarget) delete(cmpTarget);
             cmpTarget = target;
             cmpMethod = method;
             return true;