Address linting errors caught by CI

Author: Nashenas88

src/librustc/mir/mod.rs

@@ -206,7 +206,9 @@ impl<'tcx> Body<'tcx> {
         &mut self.basic_blocks
     }
 
-    pub fn basic_block_terminator_opt_mut(&mut self, bb: BasicBlock) -> &mut Option<Terminator<'tcx>> {
+    pub fn basic_block_terminator_opt_mut(
+        &mut self, bb: BasicBlock
+    ) -> &mut Option<Terminator<'tcx>> {
         // FIXME we should look into improving the cache invalidation
         self.predecessors_cache = None;
         &mut self.basic_blocks[bb].terminator
@@ -256,7 +258,7 @@ impl<'tcx> Body<'tcx> {
 
     #[inline]
     pub fn predecessors_for(&self, bb: BasicBlock) -> &[BasicBlock] {
-        // TODO(nashenas88) could this be predecessors sometimes too?
+        // FIXME(nashenas88) could this be predecessors sometimes too?
         &self.unwrap_predecessors()[bb]
     }
 

src/librustc_mir/transform/simplify.rs

@@ -276,8 +276,8 @@ pub fn remove_dead_blocks(body: &mut Body<'_>) {
         for alive_index in seen.iter() {
             replacements[alive_index] = BasicBlock::new(used_blocks);
             if alive_index != used_blocks {
-                // Swap the next alive block data with the current available slot. Since alive_index is
-                // non-decreasing this is a valid operation.
+                // Swap the next alive block data with the current available slot. Since
+                // alive_index is non-decreasing this is a valid operation.
                 basic_blocks.raw.swap(alive_index, used_blocks);
             }
             used_blocks += 1;