Fix mac breakage

src/servo/text/native_font.rs

@@ -16,7 +16,7 @@ type NativeFont/& = quartz_native_font::QuartzNativeFont;
 type NativeFont/& = ft_native_font::FreeTypeNativeFont;
 
 #[cfg(target_os = "macos")]
-fn with_test_native_font(f: fn@(NativeFont)) {
+fn with_test_native_font(f: fn@(nf: &NativeFont)) {
     quartz_native_font::with_test_native_font(f);
 }
 

src/servo/text/native_font/ft_native_font.rs

@@ -85,7 +85,6 @@ impl methods for FT_Error {
     fn succeeded() -> bool { self == 0 as FT_Error }
 }
 
-#[cfg(target_os = "linux")]
 fn with_test_native_font(f: fn@(nf: &NativeFont)) {
     import font::test_font_bin;
     import unwrap_result = result::unwrap;

src/servo/text/native_font/quartz_native_font.rs

@@ -17,7 +17,6 @@ class QuartzNativeFont/& {
     }
 }
 
-#[cfg(target_os = "linux")]
-fn with_test_native_font(f: fn@(nf: &NativeFont)) {
+fn with_test_native_font(_f: fn@(nf: &NativeFont)) {
     fail
 }