Fix reported test-tidy errors

This fixes lines that were reported to have missing
space after a comma.

components/script/document_loader.rs

@@ -60,7 +60,7 @@ impl DocumentLoader {
     /// are lots of iframes.
     pub fn new_with_task(resource_task: Arc<ResourceTask>,
                          data: Option<NotifierData>,
-                         initial_load: Option<Url>,)
+                         initial_load: Option<Url>)
                          -> DocumentLoader {
         let initial_loads = initial_load.into_iter().map(LoadType::PageSource).collect();
 

components/script/dom/canvasrenderingcontext2d.rs

@@ -1153,7 +1153,7 @@ impl Drop for CanvasRenderingContext2D {
     }
 }
 
-pub fn parse_color(string: &str) -> Result<RGBA,()> {
+pub fn parse_color(string: &str) -> Result<RGBA, ()> {
     let mut parser = Parser::new(&string);
     match CSSColor::parse(&mut parser) {
         Ok(CSSColor::RGBA(rgba)) => {

components/script/dom/xmlhttprequest.rs

@@ -1068,7 +1068,7 @@ impl XMLHttpRequest {
 
     fn fetch(&self,
               load_data: LoadData,
-              cors_request: Result<Option<CORSRequest>,()>,
+              cors_request: Result<Option<CORSRequest>, ()>,
               global: GlobalRef) -> ErrorResult {
         let cors_request = match cors_request {
             Err(_) => {

components/script/textinput.rs

@@ -158,7 +158,7 @@ impl<T: ClipboardProvider> TextInput<T> {
             if begin.line != end.line {
                 let mut s = String::new();
                 s.push_str(&self.lines[begin.line][begin.index..]);
-                for (_, line) in self.lines.iter().enumerate().filter(|&(i,_)| begin.line < i && i < end.line) {
+                for (_, line) in self.lines.iter().enumerate().filter(|&(i, _)| begin.line < i && i < end.line) {
                     s.push_str("\n");
                     s.push_str(line);
                 }