Web Inspector: Follow-up to r146898: test that uiSourceCodes are not leaking in breakpoint manager.
https://bugs.webkit.org/show_bug.cgi?id=113368

Reviewed by Pavel Feldman.

Source/WebCore:

Added a missed line and a test.

* inspector/front-end/BreakpointManager.js:
(WebInspector.BreakpointManager.prototype._projectWillReset):

LayoutTests:

* inspector/debugger/breakpoint-manager.html:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146973 268f45cc-cd09-0410-ab3c-d52691b4dbfc