Fix enum in debug.h

TBR=ishell@chromium.org

Review URL: https://codereview.chromium.org/700103002

Cr-Commit-Position: refs/heads/master@{#25131}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25131 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/debug.h

@@ -54,7 +54,7 @@ enum ExceptionBreakType {
 enum BreakLocatorType {
   ALL_BREAK_LOCATIONS = 0,
   SOURCE_BREAK_LOCATIONS = 1,
-  CALLS_AND_RETURNS = 2,
+  CALLS_AND_RETURNS = 2
 };