Reviewed by Pavel Feldman.

        Web Inspector: fix scripts concatenation in scripts panel.
        https://bugs.webkit.org/show_bug.cgi?id=58138

        When there is just one script starting at 0:0 it should not be surrounded by <script> framing.

        * inspector/front-end/SourceFile.js:
        (WebInspector.SourceFile.prototype._loadResourceContent):
        (WebInspector.SourceFile.prototype._loadAndConcatenateScriptsContent):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@83293 268f45cc-cd09-0410-ab3c-d52691b4dbfc