Fix checkedInstructionOrNonGenerateAtUseSite.

sdk/lib/_internal/compiler/implementation/ssa/nodes.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
diff --git a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
index a40355bd1b5d7bf0e9044151fb4476293bc1e55f..d51d9536dcbb892f7fcb2dfe406a8c53d435b181 100644
--- a/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
+++ b/sdk/lib/_internal/compiler/implementation/ssa/nodes.dart
@@ -831,14 +831,14 @@ abstract class HInstruction implements Spannable {
         && !canThrow();
   }
 
-  // Overridden by [HCheck] to return the actual non-[HCheck]
-  // instruction it checks against.
+  /// Overridden by [HCheck] to return the actual non-[HCheck]
+  /// instruction it checks against.
   HInstruction nonCheck() => this;
 
-  // Can this node throw an exception?
+  /// Can this node throw an exception?
   bool canThrow() => false;
 
-  // Does this node potentially affect control flow.
+  /// Does this node potentially affect control flow.
   bool isControlFlow() => false;
 
   bool isExact() => instructionType.isExact || isNull();