Merge pull request #2986 from 13r0ck/tiny_skia/zero-size-image

Fix #2877: tiny_skia: crash when zero width/height image

core/src/image.rs

@@ -348,6 +348,9 @@ pub enum Error {
     /// Loading images is unsupported.
     #[error("loading images is unsupported")]
     Unsupported,
+    /// The image is empty.
+    #[error("the image is empty")]
+    Empty,
     /// Not enough memory to allocate the image.
     #[error("not enough memory to allocate the image")]
     OutOfMemory,

tiny_skia/src/raster.rs

@@ -106,6 +106,10 @@ impl Cache {
                 }
             };
 
+            if image.width() == 0 || image.height() == 0 {
+                return Err(raster::Error::Empty);
+            }
+
             let mut buffer =
                 vec![0u32; image.width() as usize * image.height() as usize];