Fix dynamic freeze scope artificially extended warnings #455
Description
These are now appearing in servo and a few of the submodules. They should be cleaned up.
See rust-lang/rust#6248 for more information about the warning.
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:168:34: 168:44 warning: Dynamic freeze scope artifically extended (see Issue #6248)
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:168 let font_ptr: *mut Font = &mut *font;
^~~~~~~~~~
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:168:34: 168:44 note: managed value only needs to be frozen for the expression at 168:34...
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:168 let font_ptr: *mut Font = &mut *font;
^~~~~~~~~~
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:167:42: 196:5 note: ...but due to Issue #6248, it will be frozen for the block at 167:42
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:167 pub fn new(font: @mut Font) -> Shaper {
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:168 let font_ptr: *mut Font = &mut *font;
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:169 let hb_face: *hb_face_t = hb_face_create_for_tables(get_font_table_func,
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:170 font_ptr as *c_void,
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:171 null());
/Users/jack/src/servo/src/components/servo-gfx/text/shaping/harfbuzz.rs:172 let hb_font: *hb_font_t = hb_font_create(hb_face);
...