[TYPO3-core] RFC #14970: ts browser condition results in error if browser is unknown

[Gosign | Caspar Stuebs]

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This is a svn patch request

Bugtracker:
http://bugs.typo3.org/view.php?id=14970
(http://bugs.typo3.org/view.php?id=14838 also)

Branches:
4.4, trunk

Problem:
If a [browser = ...] condition is set in ts and the calling browser is
unknown, the condition produces an error.
Within the return-array of the function
t3lib_utility_client::getBrowserInfo() there is a new key called 'all',
should containing an array, which is now used for the condition-testing
in t3lib_matchcondition_abstract->evaluateConditionCommon().
If the browser is 'unknown' neither the new key 'all', nor the key
'version' are initialized for the return array.

Solution:
Add the array-keys 'all' and 'version' to the return-array, if browser
is unknown.

Note:
In the first patch on the bugtracker I added the value 'unknown' to the
key 'version', but I think this is not good.
In the second version of the patch, attached here, the value for
'version' is empty.

Viele Grüsse

Caspar Stuebs
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