Dart SDK Spelling b, c, and d.

runtime/vm/redundancy_elimination.cc

Index: runtime/vm/redundancy_elimination.cc
diff --git a/runtime/vm/redundancy_elimination.cc b/runtime/vm/redundancy_elimination.cc
index 59ebec8b88918e7538880168a05fdf7e7ed750f1..50a8002128587996752b8bf01714133de2b31ec6 100644
--- a/runtime/vm/redundancy_elimination.cc
+++ b/runtime/vm/redundancy_elimination.cc
@@ -2838,7 +2838,7 @@ void AllocationSinking::RemoveUnusedMaterializations() {
     if ((mat->input_use_list() == NULL) && (mat->env_use_list() == NULL)) {
       // Check if this materialization failed to compute and remove any
       // unforwarded loads. There were no loads from any allocation sinking
-      // candidate in the beggining so it is safe to assume that any encountered
+      // candidate in the beginning so it is safe to assume that any encountered
       // load was inserted by CreateMaterializationAt.
       for (intptr_t i = 0; i < mat->InputCount(); i++) {
         LoadFieldInstr* load = mat->InputAt(i)->definition()->AsLoadField();