Fix typo
diff --git a/src/librustc_mir/dataflow/generic.rs b/src/librustc_mir/dataflow/generic.rs
index 6ee81de..901467d 100644
--- a/src/librustc_mir/dataflow/generic.rs
+++ b/src/librustc_mir/dataflow/generic.rs
@@ -49,7 +49,7 @@
/// The size of each bitvector allocated for each block.
fn bits_per_block(&self, body: &mir::Body<'tcx>) -> usize;
- /// Mutates the entry set of the `START_BLOCK` to containthe initial state for dataflow
+ /// Mutates the entry set of the `START_BLOCK` to contain the initial state for dataflow
/// analysis.
fn initialize_start_block(&self, body: &mir::Body<'tcx>, state: &mut BitSet<Self::Idx>);