tvg_saver: do not pass through if the view size is invalid.

diff --git a/src/savers/tvg/tvgTvgSaver.cpp b/src/savers/tvg/tvgTvgSaver.cpp
index 131d9b5..e8e1a24 100644 (file)
--- a/src/savers/tvg/tvgTvgSaver.cpp
+++ b/src/savers/tvg/tvgTvgSaver.cpp
@@ -72,6 +72,9 @@ bool TvgSaver::writeViewSize()
 {
     float var[2];
     paint->bounds(nullptr, nullptr, &var[0], &var[1]);
+
+    if (var[0] <= 0.0f || var[1] <= 0.0f) return false;
+
     writeData(var, SIZE(var));
 
     return true;