Restoring a missing 'at' statement in the Errors message

git-svn-id: https://google-guice.googlecode.com/svn/trunk@645 d779f126-a31b-0410-b53b-1d3aecad763e
diff --git a/src/com/google/inject/internal/Errors.java b/src/com/google/inject/internal/Errors.java
index e3689b7..b21b886 100644
--- a/src/com/google/inject/internal/Errors.java
+++ b/src/com/google/inject/internal/Errors.java
@@ -381,8 +381,9 @@
             } else {
               throw new AssertionError();
             }
+          } else {
+            fmt.format("  while locating %s%n", convert(dependency.getKey()));
           }
-          continue;
         }
 
         fmt.format("  at %s%n", sourceToString(source));