Some more polishings

Author: odersky

compiler/src/dotty/tools/dotc/cc/CaptureOps.scala

@@ -103,7 +103,7 @@ extension (tp: Type)
         case tp: TypeRef if tp.symbol == defn.Caps_CapSet =>
           // This can happen in cases where we try to type an eta expansion `$x => f($x)`
           // from a polymorphic target type using capture sets. In that case the parameter type
-          // of $x is not treated as inferred is approximated to CapSet. An example is
+          // of $x is not treated as inferred and is approximated to CapSet. An example is
           // capset-problem.scala. We handle these cases by appromxating to the empty set.
           Nil
         case _ =>

compiler/src/dotty/tools/dotc/cc/CheckCaptures.scala

@@ -2004,7 +2004,7 @@ class CheckCaptures extends Recheck, SymTransformer:
                 c.origin match
                   case Origin.Parameter(param) =>
                     report.error(
-                      em"Local $c created in type of $param leaks into capture scope of ${ownerStr(param.owner)}",
+                      em"Local $c created in type of $param leaks into capture scope${param.owner.qualString("of")}",
                       tree.srcPos)
                   case _ =>
                     check(c.hiddenSet)