Fix NullReferenceException in ChangeDeclarations

meziantou · meziantou · commit 333885bfe7b8 · 2024-02-26T00:06:04.000-05:00
diff --git a/src/AngleSharp.Css/Dom/Internal/CssStyleDeclaration.cs b/src/AngleSharp.Css/Dom/Internal/CssStyleDeclaration.cs
@@ -377,6 +377,9 @@ private void RemovePropertyByName(String propertyName)
 
         private void ChangeDeclarations(IEnumerable<ICssProperty> decls, Predicate<ICssProperty> defaultSkip, Func<ICssProperty, ICssProperty, Boolean> removeExisting)
         {
+            if (decls == null)
+                return;
+
             var declarations = new List<ICssProperty>();
 
             foreach (var newdecl in decls)

Original file line number	Diff line number	Diff line change
`@@ -377,6 +377,9 @@ private void RemovePropertyByName(String propertyName)`
`377`	`377`
`378`	`378`	`private void ChangeDeclarations(IEnumerable<ICssProperty> decls, Predicate<ICssProperty> defaultSkip, Func<ICssProperty, ICssProperty, Boolean> removeExisting)`
`379`	`379`	`{`
	`380`	`+ if (decls == null)`
	`381`	`+ return;`
	`382`	`+`
`380`	`383`	`var declarations = new List<ICssProperty>();`
`381`	`384`
`382`	`385`	`foreach (var newdecl in decls)`