LibWeb: Reject non-finite values in 2D canvas transforms

Userland/Libraries/LibWeb/HTML/Canvas/CanvasTransform.h

@@ -24,7 +24,8 @@ public:
     void scale(float sx, float sy)
     {
         dbgln_if(CANVAS_RENDERING_CONTEXT_2D_DEBUG, "CanvasTransform::scale({}, {})", sx, sy);
-
+        if (!isfinite(sx) || !isfinite(sy))
+            return;
         my_drawing_state().transform.scale(sx, sy);
         flush_transform();
     }
@@ -32,6 +33,8 @@ public:
     void translate(float tx, float ty)
     {
         dbgln_if(CANVAS_RENDERING_CONTEXT_2D_DEBUG, "CanvasTransform::translate({}, {})", tx, ty);
+        if (!isfinite(tx) || !isfinite(ty))
+            return;
         my_drawing_state().transform.translate(tx, ty);
         flush_transform();
     }
@@ -39,6 +42,8 @@ public:
     void rotate(float radians)
     {
         dbgln_if(CANVAS_RENDERING_CONTEXT_2D_DEBUG, "CanvasTransform::rotate({})", radians);
+        if (!isfinite(radians))
+            return;
         my_drawing_state().transform.rotate_radians(radians);
         flush_transform();
     }

Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp

@@ -89,7 +89,7 @@ Gfx::Path CanvasRenderingContext2D::rect_path(float x, float y, float width, flo
 
 void CanvasRenderingContext2D::fill_rect(float x, float y, float width, float height)
 {
-    return fill_internal(rect_path(x, y, width, height), Gfx::WindingRule::EvenOdd);
+    fill_internal(rect_path(x, y, width, height), Gfx::WindingRule::EvenOdd);
 }
 
 void CanvasRenderingContext2D::clear_rect(float x, float y, float width, float height)
@@ -312,7 +312,7 @@ void CanvasRenderingContext2D::fill_internal(Gfx::Path const& path, Gfx::Winding
 
 void CanvasRenderingContext2D::fill(StringView fill_rule)
 {
-    return fill_internal(path(), parse_fill_rule(fill_rule));
+    fill_internal(path(), parse_fill_rule(fill_rule));
 }
 
 void CanvasRenderingContext2D::fill(Path2D& path, StringView fill_rule)